21000211102 has 16 divisors (see below), whose sum is σ = 33930711360. Its totient is φ = 9690321312.

The previous prime is 21000211081. The next prime is 21000211117. The reversal of 21000211102 is 20111200012.

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, 39924 + ... + 208792.

It is an arithmetic number, because the mean of its divisors is an integer number (2120669460).

Almost surely, 2^21000211102 is an apocalyptic number.

21000211102 is a deficient number, since it is larger than the sum of its proper divisors (12930500258).

21000211102 is a wasteful number, since it uses less digits than its factorization.

21000211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173667.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21000211102 its reverse (20111200012), we get a palindrome (41111411114).

The spelling of 21000211102 in words is "twenty-one billion, two hundred eleven thousand, one hundred two".