1213771104475 has 24 divisors (see below), whose sum is σ = 1506998769120. Its totient is φ = 969777093120.

The previous prime is 1213771104467. The next prime is 1213771104571. The reversal of 1213771104475 is 5744011773121.

It is not a de Polignac number, because 1213771104475 - 2³ = 1213771104467 is a prime.

It is a super-2 number, since 2×1213771104475² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161037907 + ... + 161045443.

It is an arithmetic number, because the mean of its divisors is an integer number (62791615380).

Almost surely, 2^{1213771104475} is an apocalyptic number.

1213771104475 is a deficient number, since it is larger than the sum of its proper divisors (293227664645).

1213771104475 is a wasteful number, since it uses less digits than its factorization.

1213771104475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14919 (or 14914 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 43.

Adding to 1213771104475 its reverse (5744011773121), we get a palindrome (6957782877596).

The spelling of 1213771104475 in words is "one trillion, two hundred thirteen billion, seven hundred seventy-one million, one hundred four thousand, four hundred seventy-five".