2210222011221 has 48 divisors (see below), whose sum is σ = 3776738095104. Its totient is φ = 1219173161472.

The previous prime is 2210222011213. The next prime is 2210222011229. The reversal of 2210222011221 is 1221102220122.

It is a happy number.

2210222011221 is a `hidden beast` number, since 2 + 210 + 2 + 220 + 11 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (2210222011213) and next prime (2210222011229).

It is not a de Polignac number, because 2210222011221 - 2³ = 2210222011213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210222011194 and 2210222011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210222011229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3436980 + ... + 4029053.

It is an arithmetic number, because the mean of its divisors is an integer number (78682043648).

Almost surely, 2^{2210222011221} is an apocalyptic number.

2210222011221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2210222011221 is a deficient number, since it is larger than the sum of its proper divisors (1566516083883).

2210222011221 is a wasteful number, since it uses less digits than its factorization.

2210222011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7466210 (or 7466207 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2210222011221 its reverse (1221102220122), we get a palindrome (3431324231343).

The spelling of 2210222011221 in words is "two trillion, two hundred ten billion, two hundred twenty-two million, eleven thousand, two hundred twenty-one".