1000012210021 has 16 divisors (see below), whose sum is σ = 1091688865920. Its totient is φ = 908463582720.

The previous prime is 1000012210009. The next prime is 1000012210037. The reversal of 1000012210021 is 1200122100001.

It is a cyclic number.

It is not a de Polignac number, because 1000012210021 - 2²³ = 1000003821413 is a prime.

It is a super-2 number, since 2×1000012210021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000012210061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139682440 + ... + 139689598.

It is an arithmetic number, because the mean of its divisors is an integer number (68230554120).

Almost surely, 2^{1000012210021} is an apocalyptic number.

1000012210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000012210021 is a deficient number, since it is larger than the sum of its proper divisors (91676655899).

1000012210021 is a wasteful number, since it uses less digits than its factorization.

1000012210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14316.

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

Adding to 1000012210021 its reverse (1200122100001), we get a palindrome (2200134310022).

The spelling of 1000012210021 in words is "one trillion, twelve million, two hundred ten thousand, twenty-one".