32130021020 has 48 divisors (see below), whose sum is σ = 68215434336. Its totient is φ = 12710880000.

The previous prime is 32130020987. The next prime is 32130021023. The reversal of 32130021020 is 2012003123.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 32130020986 and 32130021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32130021023) 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, 1953230 + ... + 1969610.

It is an arithmetic number, because the mean of its divisors is an integer number (1421154882).

Almost surely, 2^32130021020 is an apocalyptic number.

It is an amenable number.

32130021020 is an abundant number, since it is smaller than the sum of its proper divisors (36085413316).

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

32130021020 is a wasteful number, since it uses less digits than its factorization.

32130021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17462 (or 17460 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 32130021020 its reverse (2012003123), we get a palindrome (34142024143).

The spelling of 32130021020 in words is "thirty-two billion, one hundred thirty million, twenty-one thousand, twenty".