20111313102 has 16 divisors (see below), whose sum is σ = 40239338112. Its totient is φ = 6700985720.

The previous prime is 20111313083. The next prime is 20111313109. The reversal of 20111313102 is 20131311102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111313109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680658 + ... + 709589.

It is an arithmetic number, because the mean of its divisors is an integer number (2514958632).

Almost surely, 2^20111313102 is an apocalyptic number.

20111313102 is an abundant number, since it is smaller than the sum of its proper divisors (20128025010).

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

20111313102 is a wasteful number, since it uses less digits than its factorization.

20111313102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392663.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20111313102 its reverse (20131311102), we get a palindrome (40242624204).

The spelling of 20111313102 in words is "twenty billion, one hundred eleven million, three hundred thirteen thousand, one hundred two".