10012021000 has 32 divisors (see below), whose sum is σ = 23428131480. Its totient is φ = 4004808000.

The previous prime is 10012020979. The next prime is 10012021013. The reversal of 10012021000 is 12021001.

It can be written as a sum of positive squares in 4 ways, for example, as 4295753764 + 5716267236 = 65542^2 + 75606^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5005011 + ... + 5007010.

Almost surely, 2^10012021000 is an apocalyptic number.

10012021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10012021000 is an abundant number, since it is smaller than the sum of its proper divisors (13416110480).

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

10012021000 is a wasteful number, since it uses less digits than its factorization.

10012021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012042 (or 10012028 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10012021000 its reverse (12021001), we get a palindrome (10024042001).

Subtracting from 10012021000 its reverse (12021001), we obtain a palindrome (9999999999).

The spelling of 10012021000 in words is "ten billion, twelve million, twenty-one thousand".