220121022330 has 192 divisors, whose sum is σ = 638402663808. Its totient is φ = 52174356480.

The previous prime is 220121022287. The next prime is 220121022391. The reversal of 220121022330 is 33220121022.

220121022330 is a `hidden beast` number, since 2 + 201 + 210 + 223 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7956682 + ... + 7984298.

It is an arithmetic number, because the mean of its divisors is an integer number (3325013874).

Almost surely, 2^220121022330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220121022330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319201331904).

220121022330 is an abundant number, since it is smaller than the sum of its proper divisors (418281641478).

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

220121022330 is a wasteful number, since it uses less digits than its factorization.

220121022330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27821 (or 27818 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 220121022330 its reverse (33220121022), we get a palindrome (253341143352).

The spelling of 220121022330 in words is "two hundred twenty billion, one hundred twenty-one million, twenty-two thousand, three hundred thirty".