222111222121012 has 24 divisors (see below), whose sum is σ = 449845513160960. Its totient is φ = 93985580426400.

The previous prime is 222111222120967. The next prime is 222111222121111. The reversal of 222111222121012 is 210121222111222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50205970239 + ... + 50205974662.

Almost surely, 2^{222111222121012} is an apocalyptic number.

It is an amenable number.

222111222121012 is an abundant number, since it is smaller than the sum of its proper divisors (227734291039948).

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

222111222121012 is a wasteful number, since it uses less digits than its factorization.

222111222121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100411944991 (or 100411944989 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 222111222121012 its reverse (210121222111222), we get a palindrome (432232444232234).

The spelling of 222111222121012 in words is "two hundred twenty-two trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, twelve".