20211213102 has 32 divisors (see below), whose sum is σ = 42585177600. Its totient is φ = 6377200128.

The previous prime is 20211213091. The next prime is 20211213119. The reversal of 20211213102 is 20131211202.

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, 65899 + ... + 211577.

It is an arithmetic number, because the mean of its divisors is an integer number (1330786800).

Almost surely, 2^20211213102 is an apocalyptic number.

20211213102 is an abundant number, since it is smaller than the sum of its proper divisors (22373964498).

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

20211213102 is a wasteful number, since it uses less digits than its factorization.

20211213102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146920.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20211213102 its reverse (20131211202), we get a palindrome (40342424304).

The spelling of 20211213102 in words is "twenty billion, two hundred eleven million, two hundred thirteen thousand, one hundred two".