21522144241100 has 18 divisors (see below), whose sum is σ = 46703053003404. Its totient is φ = 8608857696400.

The previous prime is 21522144241061. The next prime is 21522144241181. The reversal of 21522144241100 is 114244122512.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107610721106 + ... + 107610721305.

Almost surely, 2^{21522144241100} is an apocalyptic number.

21522144241100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21522144241100 is an abundant number, since it is smaller than the sum of its proper divisors (25180908762304).

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

21522144241100 is a wasteful number, since it uses less digits than its factorization.

21522144241100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215221442425 (or 215221442418 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

Adding to 21522144241100 its reverse (114244122512), we get a palindrome (21636388363612).

The spelling of 21522144241100 in words is "twenty-one trillion, five hundred twenty-two billion, one hundred forty-four million, two hundred forty-one thousand, one hundred".