1321222132031 has 12 divisors (see below), whose sum is σ = 1477381883880. Its totient is φ = 1178055642240.

The previous prime is 1321222132007. The next prime is 1321222132039. The reversal of 1321222132031 is 1302312221231.

It is a de Polignac number, because none of the positive numbers 2^k-1321222132031 is a prime.

It is a super-2 number, since 2×1321222132031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321222131988 and 1321222132006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321222132039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120302480 + ... + 120313461.

It is an arithmetic number, because the mean of its divisors is an integer number (123115156990).

Almost surely, 2^{1321222132031} is an apocalyptic number.

1321222132031 is a deficient number, since it is larger than the sum of its proper divisors (156159751849).

1321222132031 is a wasteful number, since it uses less digits than its factorization.

1321222132031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240615994 (or 240615977 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1321222132031 its reverse (1302312221231), we get a palindrome (2623534353262).

The spelling of 1321222132031 in words is "one trillion, three hundred twenty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, thirty-one".