213396420501 has 36 divisors (see below), whose sum is σ = 343449797964. Its totient is φ = 127559456640.

The previous prime is 213396420481. The next prime is 213396420509. The reversal of 213396420501 is 105024693312.

213396420501 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 9 + 642 + 0 + 5 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 102527399601 + 110869020900 = 320199^2 + 332970^2 .

It is not a de Polignac number, because 213396420501 - 2⁷ = 213396420373 is a prime.

It is a super-2 number, since 2×213396420501² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213396420509) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1262670 + ... + 1421663.

Almost surely, 2^213396420501 is an apocalyptic number.

It is an amenable number.

213396420501 is a deficient number, since it is larger than the sum of its proper divisors (130053377463).

213396420501 is a wasteful number, since it uses less digits than its factorization.

213396420501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684434 (or 2684420 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 213396420501 in words is "two hundred thirteen billion, three hundred ninety-six million, four hundred twenty thousand, five hundred one".