21002110012010 has 32 divisors (see below), whose sum is σ = 38684089648512. Its totient is φ = 8205235093440.

The previous prime is 21002110011991. The next prime is 21002110012031. The reversal of 21002110012010 is 1021001120012.

It is a junction number, because it is equal to n+sod(n) for n = 21002110011982 and 21002110012000.

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, 14343707 + ... + 15739953.

It is an arithmetic number, because the mean of its divisors is an integer number (1208877801516).

Almost surely, 2^{21002110012010} is an apocalyptic number.

21002110012010 is a deficient number, since it is larger than the sum of its proper divisors (17681979636502).

21002110012010 is a wasteful number, since it uses less digits than its factorization.

21002110012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431278.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21002110012010 its reverse (1021001120012), we get a palindrome (22023111132022).

The spelling of 21002110012010 in words is "twenty-one trillion, two billion, one hundred ten million, twelve thousand, ten".