222121012112112 has 80 divisors (see below), whose sum is σ = 604017038828160. Its totient is φ = 70143040832256.

The previous prime is 222121012112101. The next prime is 222121012112117. The reversal of 222121012112112 is 211211210121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121012112117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165889018 + ... + 167222630.

It is an arithmetic number, because the mean of its divisors is an integer number (7550212985352).

Almost surely, 2^{222121012112112} is an apocalyptic number.

It is an amenable number.

222121012112112 is an abundant number, since it is smaller than the sum of its proper divisors (381896026716048).

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

222121012112112 is a wasteful number, since it uses less digits than its factorization.

222121012112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516270 (or 1516264 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 222121012112112 its reverse (211211210121222), we get a palindrome (433332222233334).

The spelling of 222121012112112 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twelve million, one hundred twelve thousand, one hundred twelve".