1021210120012 has 6 divisors (see below), whose sum is σ = 1787117710028. Its totient is φ = 510605060004.

The previous prime is 1021210119997. The next prime is 1021210120031. The reversal of 1021210120012 is 2100210121201.

It is a junction number, because it is equal to n+sod(n) for n = 1021210119974 and 1021210120001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127651264998 + ... + 127651265005.

Almost surely, 2^{1021210120012} is an apocalyptic number.

It is an amenable number.

1021210120012 is a deficient number, since it is larger than the sum of its proper divisors (765907590016).

1021210120012 is a wasteful number, since it uses less digits than its factorization.

1021210120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255302530007 (or 255302530005 counting only the distinct ones).

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

Adding to 1021210120012 its reverse (2100210121201), we get a palindrome (3121420241213).

The spelling of 1021210120012 in words is "one trillion, twenty-one billion, two hundred ten million, one hundred twenty thousand, twelve".