20131122102 has 32 divisors (see below), whose sum is σ = 49553532672. Its totient is φ = 5309306784.

The previous prime is 20131122083. The next prime is 20131122131. The reversal of 20131122102 is 20122113102.

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, 18434548 + ... + 18435639.

It is an arithmetic number, because the mean of its divisors is an integer number (1548547896).

Almost surely, 2^20131122102 is an apocalyptic number.

20131122102 is an abundant number, since it is smaller than the sum of its proper divisors (29422410570).

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

20131122102 is a wasteful number, since it uses less digits than its factorization.

20131122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36870212.

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

Adding to 20131122102 its reverse (20122113102), we get a palindrome (40253235204).

The spelling of 20131122102 in words is "twenty billion, one hundred thirty-one million, one hundred twenty-two thousand, one hundred two".