121011222221112 has 32 divisors (see below), whose sum is σ = 318450584793600. Its totient is φ = 38214070174944.

The previous prime is 121011222221107. The next prime is 121011222221167. The reversal of 121011222221112 is 211122222110121.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 132687743208 + ... + 132687744119.

It is an arithmetic number, because the mean of its divisors is an integer number (9951580774800).

Almost surely, 2^{121011222221112} is an apocalyptic number.

121011222221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121011222221112 is an abundant number, since it is smaller than the sum of its proper divisors (197439362572488).

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

121011222221112 is a wasteful number, since it uses less digits than its factorization.

121011222221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265375487355 (or 265375487351 counting only the distinct ones).

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

Adding to 121011222221112 its reverse (211122222110121), we get a palindrome (332133444331233).

The spelling of 121011222221112 in words is "one hundred twenty-one trillion, eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twelve".