221400002131313 has 4 divisors (see below), whose sum is σ = 228541937683968. Its totient is φ = 214258066578660.

The previous prime is 221400002131291. The next prime is 221400002131327. The reversal of 221400002131313 is 313131200004122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221400002131313 - 2⁴² = 217001955620209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221400002131333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3570967776281 + ... + 3570967776342.

It is an arithmetic number, because the mean of its divisors is an integer number (57135484420992).

Almost surely, 2^{221400002131313} is an apocalyptic number.

It is an amenable number.

221400002131313 is a deficient number, since it is larger than the sum of its proper divisors (7141935552655).

221400002131313 is an equidigital number, since it uses as much as digits as its factorization.

221400002131313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7141935552654.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 221400002131313 its reverse (313131200004122), we get a palindrome (534531202135435).

The spelling of 221400002131313 in words is "two hundred twenty-one trillion, four hundred billion, two million, one hundred thirty-one thousand, three hundred thirteen".