213321130402 has 4 divisors (see below), whose sum is σ = 319981695606. Its totient is φ = 106660565200.

The previous prime is 213321130381. The next prime is 213321130433. The reversal of 213321130402 is 204031123312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 147595040761 + 65726089641 = 384181^2 + 256371^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53330282599 + ... + 53330282602.

Almost surely, 2^213321130402 is an apocalyptic number.

213321130402 is a deficient number, since it is larger than the sum of its proper divisors (106660565204).

213321130402 is a wasteful number, since it uses less digits than its factorization.

213321130402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106660565203.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213321130402 its reverse (204031123312), we get a palindrome (417352253714).

The spelling of 213321130402 in words is "two hundred thirteen billion, three hundred twenty-one million, one hundred thirty thousand, four hundred two".