213221311402 has 64 divisors (see below), whose sum is σ = 363834374400. Its totient is φ = 92856153600.

The previous prime is 213221311361. The next prime is 213221311441. The reversal of 213221311402 is 204113122312.

213221311402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60624148 + ... + 60627664.

It is an arithmetic number, because the mean of its divisors is an integer number (5684912100).

Almost surely, 2^213221311402 is an apocalyptic number.

213221311402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213221311402 is a deficient number, since it is larger than the sum of its proper divisors (150613062998).

213221311402 is a wasteful number, since it uses less digits than its factorization.

213221311402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 213221311402 its reverse (204113122312), we get a palindrome (417334433714).

The spelling of 213221311402 in words is "two hundred thirteen billion, two hundred twenty-one million, three hundred eleven thousand, four hundred two".