121211000110012 has 12 divisors (see below), whose sum is σ = 221341826288016. Its totient is φ = 57970478313440.

The previous prime is 121211000109977. The next prime is 121211000110019. The reversal of 121211000110012 is 210011000112121.

It is a happy number.

It is a super-2 number, since 2×121211000110012² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121211000109974 and 121211000110001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211000110019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658755435289 + ... + 658755435472.

It is an arithmetic number, because the mean of its divisors is an integer number (18445152190668).

Almost surely, 2^{121211000110012} is an apocalyptic number.

It is an amenable number.

121211000110012 is a deficient number, since it is larger than the sum of its proper divisors (100130826178004).

121211000110012 is a wasteful number, since it uses less digits than its factorization.

121211000110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317510870788 (or 1317510870786 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121211000110012 its reverse (210011000112121), we get a palindrome (331222000222133).

The spelling of 121211000110012 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred ten thousand, twelve".