21011202002102 has 16 divisors (see below), whose sum is σ = 34038425122800. Its totient is φ = 9669691373472.

The previous prime is 21011202002051. The next prime is 21011202002137. The reversal of 21011202002102 is 20120020211012.

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, 1157760488 + ... + 1157778635.

It is an arithmetic number, because the mean of its divisors is an integer number (2127401570175).

Almost surely, 2^{21011202002102} is an apocalyptic number.

21011202002102 is a deficient number, since it is larger than the sum of its proper divisors (13027223120698).

21011202002102 is a wasteful number, since it uses less digits than its factorization.

21011202002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315539487.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21011202002102 its reverse (20120020211012), we get a palindrome (41131222213114).

The spelling of 21011202002102 in words is "twenty-one trillion, eleven billion, two hundred two million, two thousand, one hundred two".