1231012221322 has 32 divisors (see below), whose sum is σ = 2022239954448. Its totient is φ = 558585870336.

The previous prime is 1231012221317. The next prime is 1231012221331. The reversal of 1231012221322 is 2231222101321.

It can be written as a sum of positive squares in 8 ways, for example, as 423577561 + 1230588643761 = 20581^2 + 1109319^2 .

It is a super-2 number, since 2×1231012221322² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231012221293 and 1231012221302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442003 + ... + 1630150.

Almost surely, 2^{1231012221322} is an apocalyptic number.

1231012221322 is a deficient number, since it is larger than the sum of its proper divisors (791227733126).

1231012221322 is a wasteful number, since it uses less digits than its factorization.

1231012221322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072554.

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

Adding to 1231012221322 its reverse (2231222101321), we get a palindrome (3462234322643).

The spelling of 1231012221322 in words is "one trillion, two hundred thirty-one billion, twelve million, two hundred twenty-one thousand, three hundred twenty-two".