1001321112210 has 16 divisors (see below), whose sum is σ = 2403170669376. Its totient is φ = 267018963248.

The previous prime is 1001321112193. The next prime is 1001321112223. The reversal of 1001321112210 is 122111231001.

It is a super-2 number, since 2×1001321112210² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1001321112210.

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, 16688685174 + ... + 16688685233.

It is an arithmetic number, because the mean of its divisors is an integer number (150198166836).

Almost surely, 2^{1001321112210} is an apocalyptic number.

1001321112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001321112210 is an abundant number, since it is smaller than the sum of its proper divisors (1401849557166).

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

1001321112210 is a wasteful number, since it uses less digits than its factorization.

1001321112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33377370417.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1001321112210 its reverse (122111231001), we get a palindrome (1123432343211).

The spelling of 1001321112210 in words is "one trillion, one billion, three hundred twenty-one million, one hundred twelve thousand, two hundred ten".