221013002031 has 4 divisors (see below), whose sum is σ = 294684002712. Its totient is φ = 147342001352.

The previous prime is 221013002017. The next prime is 221013002131. The reversal of 221013002031 is 130200310122.

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

It is a cyclic number.

It is not a de Polignac number, because 221013002031 - 2⁷ = 221013001903 is a prime.

It is a super-2 number, since 2×221013002031² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221013002031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221013002131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36835500336 + ... + 36835500341.

It is an arithmetic number, because the mean of its divisors is an integer number (73671000678).

Almost surely, 2^221013002031 is an apocalyptic number.

221013002031 is a deficient number, since it is larger than the sum of its proper divisors (73671000681).

221013002031 is an equidigital number, since it uses as much as digits as its factorization.

221013002031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73671000680.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 221013002031 its reverse (130200310122), we get a palindrome (351213312153).

The spelling of 221013002031 in words is "two hundred twenty-one billion, thirteen million, two thousand, thirty-one".