10021012021000 has 32 divisors (see below), whose sum is σ = 23449168131480. Its totient is φ = 4008404808000.

The previous prime is 10021012020989. The next prime is 10021012021003. The reversal of 10021012021000 is 12021012001.

It can be written as a sum of positive squares in 4 ways, for example, as 6605383168836 + 3415628852164 = 2570094^2 + 1848142^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (10021012021003) 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, 5010505011 + ... + 5010507010.

Almost surely, 2^{10021012021000} is an apocalyptic number.

10021012021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021012021000 is an abundant number, since it is smaller than the sum of its proper divisors (13428156110480).

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

10021012021000 is a wasteful number, since it uses less digits than its factorization.

10021012021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021012042 (or 10021012028 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10021012021000 its reverse (12021012001), we get a palindrome (10033033033001).

The spelling of 10021012021000 in words is "ten trillion, twenty-one billion, twelve million, twenty-one thousand".