221122031313 has 32 divisors (see below), whose sum is σ = 301367711232. Its totient is φ = 144175104000.

The previous prime is 221122031267. The next prime is 221122031323. The reversal of 221122031313 is 313130221122.

It is not a de Polignac number, because 221122031313 - 2⁸ = 221122031057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221122031313.

It is not an unprimeable number, because it can be changed into a prime (221122031323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28261720 + ... + 28269542.

It is an arithmetic number, because the mean of its divisors is an integer number (9417740976).

Almost surely, 2^221122031313 is an apocalyptic number.

It is an amenable number.

221122031313 is a deficient number, since it is larger than the sum of its proper divisors (80245679919).

221122031313 is a wasteful number, since it uses less digits than its factorization.

221122031313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8745.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221122031313 its reverse (313130221122), we get a palindrome (534252252435).

The spelling of 221122031313 in words is "two hundred twenty-one billion, one hundred twenty-two million, thirty-one thousand, three hundred thirteen".