221311322311002 has 128 divisors (see below), whose sum is σ = 580892840755200. Its totient is φ = 54457326302400.

The previous prime is 221311322310961. The next prime is 221311322311007. The reversal of 221311322311002 is 200113223113122.

It is not an unprimeable number, because it can be changed into a prime (221311322311007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1272995199 + ... + 1273169037.

It is an arithmetic number, because the mean of its divisors is an integer number (4538225318400).

Almost surely, 2^{221311322311002} is an apocalyptic number.

221311322311002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221311322311002 is an abundant number, since it is smaller than the sum of its proper divisors (359581518444198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221311322311002 is a wasteful number, since it uses less digits than its factorization.

221311322311002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318912.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 221311322311002 its reverse (200113223113122), we get a palindrome (421424545424124).

The spelling of 221311322311002 in words is "two hundred twenty-one trillion, three hundred eleven billion, three hundred twenty-two million, three hundred eleven thousand, two".