22451130512 has 80 divisors (see below), whose sum is σ = 48620995200. Its totient is φ = 9980467200.

The previous prime is 22451130491. The next prime is 22451130539. The reversal of 22451130512 is 21503115422.

It is a super-2 number, since 2×22451130512² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1849262 + ... + 1861362.

It is an arithmetic number, because the mean of its divisors is an integer number (607762440).

Almost surely, 2^22451130512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22451130512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24310497600).

22451130512 is an abundant number, since it is smaller than the sum of its proper divisors (26169864688).

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

22451130512 is a wasteful number, since it uses less digits than its factorization.

22451130512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12504 (or 12498 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 22451130512 its reverse (21503115422), we get a palindrome (43954245934).

The spelling of 22451130512 in words is "twenty-two billion, four hundred fifty-one million, one hundred thirty thousand, five hundred twelve".