20932139101 has 4 divisors (see below), whose sum is σ = 21184333632. Its totient is φ = 20679944572.

The previous prime is 20932139099. The next prime is 20932139141. The reversal of 20932139101 is 10193123902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20932139101 - 2¹ = 20932139099 is a prime.

It is a super-2 number, since 2×20932139101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20932139141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126097141 + ... + 126097306.

It is an arithmetic number, because the mean of its divisors is an integer number (5296083408).

Almost surely, 2^20932139101 is an apocalyptic number.

It is an amenable number.

20932139101 is a deficient number, since it is larger than the sum of its proper divisors (252194531).

20932139101 is an equidigital number, since it uses as much as digits as its factorization.

20932139101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252194530.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 20932139101 in words is "twenty billion, nine hundred thirty-two million, one hundred thirty-nine thousand, one hundred one".