1213021223131 has 8 divisors (see below), whose sum is σ = 1285455628800. Its totient is φ = 1142627223360.

The previous prime is 1213021223129. The next prime is 1213021223147. The reversal of 1213021223131 is 1313221203121.

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 1213021223131 - 2¹ = 1213021223129 is a prime.

It is a super-2 number, since 2×1213021223131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213021223101) 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, 510100251 + ... + 510102628.

It is an arithmetic number, because the mean of its divisors is an integer number (160681953600).

Almost surely, 2^{1213021223131} is an apocalyptic number.

1213021223131 is a deficient number, since it is larger than the sum of its proper divisors (72434405669).

1213021223131 is a wasteful number, since it uses less digits than its factorization.

1213021223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020202949.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1213021223131 its reverse (1313221203121), we get a palindrome (2526242426252).

The spelling of 1213021223131 in words is "one trillion, two hundred thirteen billion, twenty-one million, two hundred twenty-three thousand, one hundred thirty-one".