121212211012 has 24 divisors (see below), whose sum is σ = 213557590400. Its totient is φ = 60196815360.

The previous prime is 121212211009. The next prime is 121212211019. The reversal of 121212211012 is 210112212121.

It is a super-2 number, since 2×121212211012² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121212211019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327337 + ... + 591247.

Almost surely, 2^121212211012 is an apocalyptic number.

It is an amenable number.

121212211012 is a deficient number, since it is larger than the sum of its proper divisors (92345379388).

121212211012 is a wasteful number, since it uses less digits than its factorization.

121212211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264691 (or 264689 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121212211012 its reverse (210112212121), we get a palindrome (331324423133).

The spelling of 121212211012 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred eleven thousand, twelve".