222221101212102 has 24 divisors (see below), whose sum is σ = 452102797739736. Its totient is φ = 72818213949664.

The previous prime is 222221101212101. The next prime is 222221101212119. The reversal of 222221101212102 is 201212101122222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221101212101) 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 11 ways as a sum of consecutive naturals, for example, 5319836943 + ... + 5319878714.

It is an arithmetic number, because the mean of its divisors is an integer number (18837616572489).

Almost surely, 2^{222221101212102} is an apocalyptic number.

222221101212102 is an abundant number, since it is smaller than the sum of its proper divisors (229881696527634).

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

222221101212102 is a wasteful number, since it uses less digits than its factorization.

222221101212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639715780 (or 10639715721 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222221101212102 its reverse (201212101122222), we get a palindrome (423433202334324).

The spelling of 222221101212102 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred one million, two hundred twelve thousand, one hundred two".