23122142220 has 24 divisors (see below), whose sum is σ = 64741998384. Its totient is φ = 6165904576.

The previous prime is 23122142189. The next prime is 23122142227. The reversal of 23122142220 is 2224122132.

It is not an unprimeable number, because it can be changed into a prime (23122142227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192684459 + ... + 192684578.

It is an arithmetic number, because the mean of its divisors is an integer number (2697583266).

Almost surely, 2^23122142220 is an apocalyptic number.

23122142220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23122142220 is an abundant number, since it is smaller than the sum of its proper divisors (41619856164).

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

23122142220 is a wasteful number, since it uses less digits than its factorization.

23122142220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385369049 (or 385369047 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 23122142220 its reverse (2224122132), we get a palindrome (25346264352).

The spelling of 23122142220 in words is "twenty-three billion, one hundred twenty-two million, one hundred forty-two thousand, two hundred twenty".