1221412302231 has 8 divisors (see below), whose sum is σ = 1776599712384. Its totient is φ = 740249880120.

The previous prime is 1221412302203. The next prime is 1221412302241. The reversal of 1221412302231 is 1322032141221.

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

It is not a de Polignac number, because 1221412302231 - 2²¹ = 1221410205079 is a prime.

It is a super-2 number, since 2×1221412302231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221412302241) 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, 18506246971 + ... + 18506247036.

It is an arithmetic number, because the mean of its divisors is an integer number (222074964048).

Almost surely, 2^{1221412302231} is an apocalyptic number.

1221412302231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1221412302231 is a deficient number, since it is larger than the sum of its proper divisors (555187410153).

1221412302231 is a wasteful number, since it uses less digits than its factorization.

1221412302231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37012494021.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1221412302231 its reverse (1322032141221), we get a palindrome (2543444443452).

The spelling of 1221412302231 in words is "one trillion, two hundred twenty-one billion, four hundred twelve million, three hundred two thousand, two hundred thirty-one".