1210012102021 has 16 divisors (see below), whose sum is σ = 1265623994880. Its totient is φ = 1154651541120.

The previous prime is 1210012102003. The next prime is 1210012102037. The reversal of 1210012102021 is 1202012100121.

It is a cyclic number.

It is not a de Polignac number, because 1210012102021 - 2⁹ = 1210012101509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210012101992 and 1210012102010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210012102001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64832431 + ... + 64851091.

It is an arithmetic number, because the mean of its divisors is an integer number (79101499680).

Almost surely, 2^{1210012102021} is an apocalyptic number.

It is an amenable number.

1210012102021 is a deficient number, since it is larger than the sum of its proper divisors (55611892859).

1210012102021 is a wasteful number, since it uses less digits than its factorization.

1210012102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25236.

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

Adding to 1210012102021 its reverse (1202012100121), we get a palindrome (2412024202142).

The spelling of 1210012102021 in words is "one trillion, two hundred ten billion, twelve million, one hundred two thousand, twenty-one".