20120222020221 has 12 divisors (see below), whose sum is σ = 29062742391072. Its totient is φ = 13413389282376.

The previous prime is 20120222020201. The next prime is 20120222020291. The reversal of 20120222020221 is 12202022202102.

20120222020221 is a `hidden beast` number, since 2 + 0 + 1 + 202 + 220 + 20 + 221 = 666.

It is not a de Polignac number, because 20120222020221 - 2¹³ = 20120222012029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20120222020194 and 20120222020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120222020201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6274521 + ... + 8922446.

It is an arithmetic number, because the mean of its divisors is an integer number (2421895199256).

Almost surely, 2^{20120222020221} is an apocalyptic number.

It is an amenable number.

20120222020221 is a deficient number, since it is larger than the sum of its proper divisors (8942520370851).

20120222020221 is a wasteful number, since it uses less digits than its factorization.

20120222020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15344080 (or 15344077 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20120222020221 its reverse (12202022202102), we get a palindrome (32322244222323).

The spelling of 20120222020221 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, twenty thousand, two hundred twenty-one".