20100132021 has 16 divisors (see below), whose sum is σ = 27623196288. Its totient is φ = 12994766400.

The previous prime is 20100132011. The next prime is 20100132037. The reversal of 20100132021 is 12023100102.

It is not a de Polignac number, because 20100132021 - 2⁷ = 20100131893 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20100131988 and 20100132006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100132011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 760506 + ... + 786491.

It is an arithmetic number, because the mean of its divisors is an integer number (1726449768).

Almost surely, 2^20100132021 is an apocalyptic number.

It is an amenable number.

20100132021 is a deficient number, since it is larger than the sum of its proper divisors (7523064267).

20100132021 is a wasteful number, since it uses less digits than its factorization.

20100132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547132.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20100132021 its reverse (12023100102), we get a palindrome (32123232123).

The spelling of 20100132021 in words is "twenty billion, one hundred million, one hundred thirty-two thousand, twenty-one".