221112031310220 has 48 divisors (see below), whose sum is σ = 634214021521248. Its totient is φ = 57525081315840.

The previous prime is 221112031310201. The next prime is 221112031310221. The reversal of 221112031310220 is 22013130211122.

It is not an unprimeable number, because it can be changed into a prime (221112031310221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44941467319 + ... + 44941472238.

It is an arithmetic number, because the mean of its divisors is an integer number (13212792115026).

Almost surely, 2^{221112031310220} is an apocalyptic number.

221112031310220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221112031310220 is an abundant number, since it is smaller than the sum of its proper divisors (413101990211028).

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

221112031310220 is a wasteful number, since it uses less digits than its factorization.

221112031310220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89882939610 (or 89882939608 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221112031310220 its reverse (22013130211122), we get a palindrome (243125161521342).

The spelling of 221112031310220 in words is "two hundred twenty-one trillion, one hundred twelve billion, thirty-one million, three hundred ten thousand, two hundred twenty".