121011111022212 has 36 divisors (see below), whose sum is σ = 307765818163440. Its totient is φ = 40089570520752.

The previous prime is 121011111022211. The next prime is 121011111022247. The reversal of 121011111022212 is 212220111110121.

It is a happy number.

121011111022212 is a `hidden beast` number, since 1 + 210 + 111 + 110 + 22 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (121011111022211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10311097662 + ... + 10311109397.

It is an arithmetic number, because the mean of its divisors is an integer number (8549050504540).

Almost surely, 2^{121011111022212} is an apocalyptic number.

121011111022212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121011111022212 is an abundant number, since it is smaller than the sum of its proper divisors (186754707141228).

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

121011111022212 is a wasteful number, since it uses less digits than its factorization.

121011111022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20622207232 (or 20622207227 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121011111022212 its reverse (212220111110121), we get a palindrome (333231222132333).

The spelling of 121011111022212 in words is "one hundred twenty-one trillion, eleven billion, one hundred eleven million, twenty-two thousand, two hundred twelve".