1313122021012 has 6 divisors (see below), whose sum is σ = 2297963536778. Its totient is φ = 656561010504.

The previous prime is 1313122020983. The next prime is 1313122021037. The reversal of 1313122021012 is 2101202213131.

It can be written as a sum of positive squares in only one way, i.e., 1308653633296 + 4468387716 = 1143964^2 + 66846^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164140252623 + ... + 164140252630.

Almost surely, 2^{1313122021012} is an apocalyptic number.

It is an amenable number.

1313122021012 is a deficient number, since it is larger than the sum of its proper divisors (984841515766).

1313122021012 is a wasteful number, since it uses less digits than its factorization.

1313122021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328280505257 (or 328280505255 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1313122021012 its reverse (2101202213131), we get a palindrome (3414324234143).

The spelling of 1313122021012 in words is "one trillion, three hundred thirteen billion, one hundred twenty-two million, twenty-one thousand, twelve".