1213213002231 has 16 divisors (see below), whose sum is σ = 1624103197920. Its totient is φ = 805571911680.

The previous prime is 1213213002191. The next prime is 1213213002293. The reversal of 1213213002231 is 1322003123121.

It is not a de Polignac number, because 1213213002231 - 2²³ = 1213204613623 is a prime.

It is a super-4 number, since 4×1213213002231⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1213213002198 and 1213213002207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213213002931) 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, 15241 + ... + 1557773.

It is an arithmetic number, because the mean of its divisors is an integer number (101506449870).

Almost surely, 2^{1213213002231} is an apocalyptic number.

1213213002231 is a deficient number, since it is larger than the sum of its proper divisors (410890195689).

1213213002231 is a wasteful number, since it uses less digits than its factorization.

1213213002231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543586.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1213213002231 its reverse (1322003123121), we get a palindrome (2535216125352).

The spelling of 1213213002231 in words is "one trillion, two hundred thirteen billion, two hundred thirteen million, two thousand, two hundred thirty-one".