22101560 has 64 divisors (see below), whose sum is σ = 56397600. Its totient is φ = 7727616.

The previous prime is 22101559. The next prime is 22101571. The reversal of 22101560 is 6510122.

It is a congruent number.

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, 8762 + ... + 10998.

Almost surely, 2^22101560 is an apocalyptic number.

22101560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22101560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28198800).

22101560 is an abundant number, since it is smaller than the sum of its proper divisors (34296040).

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

22101560 is a wasteful number, since it uses less digits than its factorization.

22101560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280 (or 2276 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 22101560 is about 4701.2296263850. The cubic root of 22101560 is about 280.6344456918.

Adding to 22101560 its reverse (6510122), we get a palindrome (28611682).

The spelling of 22101560 in words is "twenty-two million, one hundred one thousand, five hundred sixty".