121211120012 has 12 divisors (see below), whose sum is σ = 212125151280. Its totient is φ = 60603933936.

The previous prime is 121211119961. The next prime is 121211120039. The reversal of 121211120012 is 210021112121.

It is a super-2 number, since 2×121211120012² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230312 + ... + 543567.

It is an arithmetic number, because the mean of its divisors is an integer number (17677095940).

Almost surely, 2^121211120012 is an apocalyptic number.

It is an amenable number.

121211120012 is a deficient number, since it is larger than the sum of its proper divisors (90914031268).

121211120012 is a wasteful number, since it uses less digits than its factorization.

121211120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813040 (or 813038 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121211120012 its reverse (210021112121), we get a palindrome (331232232133).

The spelling of 121211120012 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred twenty thousand, twelve".