20211102102 has 32 divisors (see below), whose sum is σ = 40504020480. Its totient is φ = 6723416160.

The previous prime is 20211102083. The next prime is 20211102113. The reversal of 20211102102 is 20120111202.

It is a congruent number.

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, 11661628 + ... + 11663360.

It is an arithmetic number, because the mean of its divisors is an integer number (1265750640).

Almost surely, 2^20211102102 is an apocalyptic number.

20211102102 is an abundant number, since it is smaller than the sum of its proper divisors (20292918378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20211102102 is a wasteful number, since it uses less digits than its factorization.

20211102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4548.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20211102102 its reverse (20120111202), we get a palindrome (40331213304).

The spelling of 20211102102 in words is "twenty billion, two hundred eleven million, one hundred two thousand, one hundred two".