32121013020 has 48 divisors (see below), whose sum is σ = 90335081088. Its totient is φ = 8527865920.

The previous prime is 32121013007. The next prime is 32121013039. The reversal of 32121013020 is 2031012123.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 1165566 + ... + 1192805.

It is an arithmetic number, because the mean of its divisors is an integer number (1881980856).

Almost surely, 2^32121013020 is an apocalyptic number.

32121013020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32121013020 is an abundant number, since it is smaller than the sum of its proper divisors (58214068068).

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

32121013020 is a wasteful number, since it uses less digits than its factorization.

32121013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358610 (or 2358608 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 32121013020 its reverse (2031012123), we get a palindrome (34152025143).

The spelling of 32121013020 in words is "thirty-two billion, one hundred twenty-one million, thirteen thousand, twenty".