21002010102110 has 16 divisors (see below), whose sum is σ = 37803699794016. Its totient is φ = 8400785905248.

The previous prime is 21002010102083. The next prime is 21002010102131. The reversal of 21002010102110 is 1120101020012.

It is a junction number, because it is equal to n+sod(n) for n = 21002010102091 and 21002010102100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3232079 + ... + 7242261.

It is an arithmetic number, because the mean of its divisors is an integer number (2362731237126).

Almost surely, 2^{21002010102110} is an apocalyptic number.

21002010102110 is a deficient number, since it is larger than the sum of its proper divisors (16801689691906).

21002010102110 is a wasteful number, since it uses less digits than its factorization.

21002010102110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533907.

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

Adding to 21002010102110 its reverse (1120101020012), we get a palindrome (22122111122122).

The spelling of 21002010102110 in words is "twenty-one trillion, two billion, ten million, one hundred two thousand, one hundred ten".