213522213402 has 32 divisors (see below), whose sum is σ = 474678100800. Its totient is φ = 71146427184.

The previous prime is 213522213391. The next prime is 213522213433. The reversal of 213522213402 is 204312225312.

213522213402 is a `hidden beast` number, since 2 + 1 + 3 + 522 + 2 + 134 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 627333 + ... + 905864.

It is an arithmetic number, because the mean of its divisors is an integer number (14833690650).

Almost surely, 2^213522213402 is an apocalyptic number.

213522213402 is an abundant number, since it is smaller than the sum of its proper divisors (261155887398).

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

213522213402 is a wasteful number, since it uses less digits than its factorization.

213522213402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535787 (or 1535781 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 213522213402 its reverse (204312225312), we get a palindrome (417834438714).

The spelling of 213522213402 in words is "two hundred thirteen billion, five hundred twenty-two million, two hundred thirteen thousand, four hundred two".