20122122330 has 128 divisors (see below), whose sum is σ = 56891520000. Its totient is φ = 5046732864.

The previous prime is 20122122329. The next prime is 20122122331. The reversal of 20122122330 is 3322122102.

It is an interprime number because it is at equal distance from previous prime (20122122329) and next prime (20122122331).

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

It is not an unprimeable number, because it can be changed into a prime (20122122331) 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, 698961 + ... + 727179.

It is an arithmetic number, because the mean of its divisors is an integer number (444465000).

Almost surely, 2^20122122330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122122330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28445760000).

20122122330 is an abundant number, since it is smaller than the sum of its proper divisors (36769397670).

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

20122122330 is a wasteful number, since it uses less digits than its factorization.

20122122330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28393 (or 28387 counting only the distinct ones).

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

Adding to 20122122330 its reverse (3322122102), we get a palindrome (23444244432).

The spelling of 20122122330 in words is "twenty billion, one hundred twenty-two million, one hundred twenty-two thousand, three hundred thirty".