121021210012 has 12 divisors (see below), whose sum is σ = 213843303856. Its totient is φ = 59923123200.

The previous prime is 121021209943. The next prime is 121021210073. The reversal of 121021210012 is 210012120121.

It is a super-2 number, since 2×121021210012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121021209974 and 121021210001.

It is a congruent number.

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, 146869989 + ... + 146870812.

Almost surely, 2^121021210012 is an apocalyptic number.

It is an amenable number.

121021210012 is a deficient number, since it is larger than the sum of its proper divisors (92822093844).

121021210012 is a wasteful number, since it uses less digits than its factorization.

121021210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293740908 (or 293740906 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121021210012 its reverse (210012120121), we get a palindrome (331033330133).

The spelling of 121021210012 in words is "one hundred twenty-one billion, twenty-one million, two hundred ten thousand, twelve".