20101321092 has 48 divisors (see below), whose sum is σ = 49444335360. Its totient is φ = 6338442528.

The previous prime is 20101321091. The next prime is 20101321117. The reversal of 20101321092 is 29012310102.

It is not an unprimeable number, because it can be changed into a prime (20101321091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91183 + ... + 220265.

It is an arithmetic number, because the mean of its divisors is an integer number (1030090320).

Almost surely, 2^20101321092 is an apocalyptic number.

It is an amenable number.

20101321092 is an abundant number, since it is smaller than the sum of its proper divisors (29343014268).

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

20101321092 is a wasteful number, since it uses less digits than its factorization.

20101321092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129792 (or 129790 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 20101321092 its reverse (29012310102), we get a palindrome (49113631194).

The spelling of 20101321092 in words is "twenty billion, one hundred one million, three hundred twenty-one thousand, ninety-two".