222102111010021 has 32 divisors (see below), whose sum is σ = 262825154113536. Its totient is φ = 185383266816000.

The previous prime is 222102111010009. The next prime is 222102111010027. The reversal of 222102111010021 is 120010111201222.

It is not a de Polignac number, because 222102111010021 - 2¹³ = 222102111001829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222102111009977 and 222102111010004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102111010027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90043441 + ... + 92477161.

It is an arithmetic number, because the mean of its divisors is an integer number (8213286066048).

Almost surely, 2^{222102111010021} is an apocalyptic number.

It is an amenable number.

222102111010021 is a deficient number, since it is larger than the sum of its proper divisors (40723043103515).

222102111010021 is a wasteful number, since it uses less digits than its factorization.

222102111010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445693.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 222102111010021 its reverse (120010111201222), we get a palindrome (342112222211243).

The spelling of 222102111010021 in words is "two hundred twenty-two trillion, one hundred two billion, one hundred eleven million, ten thousand, twenty-one".