12021532000 has 48 divisors (see below), whose sum is σ = 29536913952. Its totient is φ = 4808611200.

The previous prime is 12021531979. The next prime is 12021532001. The reversal of 12021532000 is 23512021.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021532001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498692 + ... + 1506691.

It is an arithmetic number, because the mean of its divisors is an integer number (615352374).

Almost surely, 2^12021532000 is an apocalyptic number.

12021532000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021532000 is an abundant number, since it is smaller than the sum of its proper divisors (17515381952).

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

12021532000 is an equidigital number, since it uses as much as digits as its factorization.

12021532000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005408 (or 3005390 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The spelling of 12021532000 in words is "twelve billion, twenty-one million, five hundred thirty-two thousand".