221313031102 has 4 divisors (see below), whose sum is σ = 331969546656. Its totient is φ = 110656515550.

The previous prime is 221313031033. The next prime is 221313031103. The reversal of 221313031102 is 201130313122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221313031102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221313031103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55328257774 + ... + 55328257777.

It is an arithmetic number, because the mean of its divisors is an integer number (82992386664).

Almost surely, 2^221313031102 is an apocalyptic number.

221313031102 is a deficient number, since it is larger than the sum of its proper divisors (110656515554).

221313031102 is a wasteful number, since it uses less digits than its factorization.

221313031102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110656515553.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221313031102 its reverse (201130313122), we get a palindrome (422443344224).

The spelling of 221313031102 in words is "two hundred twenty-one billion, three hundred thirteen million, thirty-one thousand, one hundred two".