222061152221 has 4 divisors (see below), whose sum is σ = 222576375744. Its totient is φ = 221545928700.

The previous prime is 222061152167. The next prime is 222061152259. The reversal of 222061152221 is 122251160222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122251160222 = 2 ⋅61125580111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222061152221 is a prime.

It is a super-2 number, since 2×222061152221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222061152281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257611115 + ... + 257611976.

It is an arithmetic number, because the mean of its divisors is an integer number (55644093936).

Almost surely, 2^222061152221 is an apocalyptic number.

It is an amenable number.

222061152221 is a deficient number, since it is larger than the sum of its proper divisors (515223523).

222061152221 is an equidigital number, since it uses as much as digits as its factorization.

222061152221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515223522.

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 222061152221 in words is "two hundred twenty-two billion, sixty-one million, one hundred fifty-two thousand, two hundred twenty-one".