1321212022231 has 8 divisors (see below), whose sum is σ = 1322030899728. Its totient is φ = 1320393288000.

The previous prime is 1321212022223. The next prime is 1321212022253. The reversal of 1321212022231 is 1322202121231.

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 1321212022231 - 2³ = 1321212022223 is a prime.

It is a super-2 number, since 2×1321212022231² (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 (1321212022331) 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, 22797411 + ... + 22855291.

It is an arithmetic number, because the mean of its divisors is an integer number (165253862466).

Almost surely, 2^{1321212022231} is an apocalyptic number.

1321212022231 is a deficient number, since it is larger than the sum of its proper divisors (818877497).

1321212022231 is a wasteful number, since it uses less digits than its factorization.

1321212022231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71633.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1321212022231 its reverse (1322202121231), we get a palindrome (2643414143462).

The spelling of 1321212022231 in words is "one trillion, three hundred twenty-one billion, two hundred twelve million, twenty-two thousand, two hundred thirty-one".