1001312210021 has 8 divisors (see below), whose sum is σ = 1012898577600. Its totient is φ = 989733301920.

The previous prime is 1001312210011. The next prime is 1001312210051. The reversal of 1001312210021 is 1200122131001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001312210021 - 2²² = 1001308015717 is a prime.

It is a super-2 number, since 2×1001312210021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001312209978 and 1001312210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001312210011) 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, 1594625 + ... + 2132006.

It is an arithmetic number, because the mean of its divisors is an integer number (126612322200).

Almost surely, 2^{1001312210021} is an apocalyptic number.

It is an amenable number.

1001312210021 is a deficient number, since it is larger than the sum of its proper divisors (11586367579).

1001312210021 is an equidigital number, since it uses as much as digits as its factorization.

1001312210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729739.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1001312210021 its reverse (1200122131001), we get a palindrome (2201434341022).

The spelling of 1001312210021 in words is "one trillion, one billion, three hundred twelve million, two hundred ten thousand, twenty-one".