222131123220 has 192 divisors, whose sum is σ = 664427473920. Its totient is φ = 55254663168.

The previous prime is 222131123177. The next prime is 222131123243. The reversal of 222131123220 is 22321131222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149381317 + ... + 149382803.

It is an arithmetic number, because the mean of its divisors is an integer number (3460559760).

Almost surely, 2^222131123220 is an apocalyptic number.

222131123220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222131123220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332213736960).

222131123220 is an abundant number, since it is smaller than the sum of its proper divisors (442296350700).

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

222131123220 is a wasteful number, since it uses less digits than its factorization.

222131123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 2720 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 222131123220 its reverse (22321131222), we get a palindrome (244452254442).

The spelling of 222131123220 in words is "two hundred twenty-two billion, one hundred thirty-one million, one hundred twenty-three thousand, two hundred twenty".