13211020200402 has 96 divisors (see below), whose sum is σ = 29340848862000. Its totient is φ = 4295042611200.

The previous prime is 13211020200341. The next prime is 13211020200409. The reversal of 13211020200402 is 20400202011231.

It is a happy number.

13211020200402 is a `hidden beast` number, since 1 + 32 + 1 + 10 + 20 + 200 + 402 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2331848107521 + 10879172092881 = 1527039^2 + 3298359^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13211020200409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43372974 + ... + 43676502.

Almost surely, 2^{13211020200402} is an apocalyptic number.

13211020200402 is an abundant number, since it is smaller than the sum of its proper divisors (16129828661598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13211020200402 is a wasteful number, since it uses less digits than its factorization.

13211020200402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303996 (or 303993 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 13211020200402 its reverse (20400202011231), we get a palindrome (33611222211633).

The spelling of 13211020200402 in words is "thirteen trillion, two hundred eleven billion, twenty million, two hundred thousand, four hundred two".