22751142220 has 24 divisors (see below), whose sum is σ = 48587187600. Its totient is φ = 8946211392.

The previous prime is 22751142209. The next prime is 22751142223. The reversal of 22751142220 is 2224115722.

It is a super-2 number, since 2×22751142220² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22751142223) 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, 9639135 + ... + 9641494.

It is an arithmetic number, because the mean of its divisors is an integer number (2024466150).

Almost surely, 2^22751142220 is an apocalyptic number.

22751142220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22751142220 is an abundant number, since it is smaller than the sum of its proper divisors (25836045380).

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

22751142220 is a wasteful number, since it uses less digits than its factorization.

22751142220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19280697 (or 19280695 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

Adding to 22751142220 its reverse (2224115722), we get a palindrome (24975257942).

The spelling of 22751142220 in words is "twenty-two billion, seven hundred fifty-one million, one hundred forty-two thousand, two hundred twenty".