1210021210012 has 48 divisors (see below), whose sum is σ = 2292839136000. Its totient is φ = 556642989824.

The previous prime is 1210021210009. The next prime is 1210021210043. The reversal of 1210021210012 is 2100121200121.

It is a junction number, because it is equal to n+sod(n) for n = 1210021209974 and 1210021210001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124312 + ... + 1560607.

It is an arithmetic number, because the mean of its divisors is an integer number (47767482000).

Almost surely, 2^{1210021210012} is an apocalyptic number.

It is an amenable number.

1210021210012 is a deficient number, since it is larger than the sum of its proper divisors (1082817925988).

1210021210012 is a wasteful number, since it uses less digits than its factorization.

1210021210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685178 (or 1685176 counting only the distinct ones).

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

Adding to 1210021210012 its reverse (2100121200121), we get a palindrome (3310142410133).

The spelling of 1210021210012 in words is "one trillion, two hundred ten billion, twenty-one million, two hundred ten thousand, twelve".