202221111021102 has 48 divisors (see below), whose sum is σ = 452818544855040. Its totient is φ = 65154865870800.

The previous prime is 202221111021101. The next prime is 202221111021169. The reversal of 202221111021102 is 201120111122202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221111021101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215505274 + ... + 216441597.

It is an arithmetic number, because the mean of its divisors is an integer number (9433719684480).

Almost surely, 2^{202221111021102} is an apocalyptic number.

202221111021102 is an abundant number, since it is smaller than the sum of its proper divisors (250597433833938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202221111021102 is a wasteful number, since it uses less digits than its factorization.

202221111021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431947749 (or 431947746 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202221111021102 its reverse (201120111122202), we get a palindrome (403341222143304).

The spelling of 202221111021102 in words is "two hundred two trillion, two hundred twenty-one billion, one hundred eleven million, twenty-one thousand, one hundred two".