1213522153353 has 8 divisors (see below), whose sum is σ = 1797810597600. Its totient is φ = 809014768884.

The previous prime is 1213522153351. The next prime is 1213522153367. The reversal of 1213522153353 is 3533512253121.

1213522153353 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 52 + 21 + 533 + 53 = 666.

It is not a de Polignac number, because 1213522153353 - 2¹ = 1213522153351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213522153351) 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, 22472632443 + ... + 22472632496.

It is an arithmetic number, because the mean of its divisors is an integer number (224726324700).

Almost surely, 2^{1213522153353} is an apocalyptic number.

It is an amenable number.

1213522153353 is a deficient number, since it is larger than the sum of its proper divisors (584288444247).

1213522153353 is an equidigital number, since it uses as much as digits as its factorization.

1213522153353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44945264948 (or 44945264942 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The spelling of 1213522153353 in words is "one trillion, two hundred thirteen billion, five hundred twenty-two million, one hundred fifty-three thousand, three hundred fifty-three".