121012111012 has 24 divisors (see below), whose sum is σ = 228078385472. Its totient is φ = 55847556000.

The previous prime is 121012111009. The next prime is 121012111021. The reversal of 121012111012 is 210111210121.

It is a happy number.

It is a super-2 number, since 2×121012111012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 121012110983 and 121012111001.

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, 676687 + ... + 836617.

Almost surely, 2^121012111012 is an apocalyptic number.

It is an amenable number.

121012111012 is a deficient number, since it is larger than the sum of its proper divisors (107066274460).

121012111012 is a wasteful number, since it uses less digits than its factorization.

121012111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174499 (or 174497 counting only the distinct ones).

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

Adding to 121012111012 its reverse (210111210121), we get a palindrome (331123321133).

The spelling of 121012111012 in words is "one hundred twenty-one billion, twelve million, one hundred eleven thousand, twelve".