21122000443344 has 160 divisors (see below), whose sum is σ = 56020715587584. Its totient is φ = 6854473866240.

The previous prime is 21122000443331. The next prime is 21122000443363. The reversal of 21122000443344 is 44334400022112.

It is a super-2 number, since 2×21122000443344² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 953448972 + ... + 953471124.

Almost surely, 2^{21122000443344} is an apocalyptic number.

21122000443344 is a gapful number since it is divisible by the number (24) 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 21122000443344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28010357793792).

21122000443344 is an abundant number, since it is smaller than the sum of its proper divisors (34898715144240).

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

21122000443344 is a wasteful number, since it uses less digits than its factorization.

21122000443344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24425 (or 24419 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 21122000443344 its reverse (44334400022112), we get a palindrome (65456400465456).

The spelling of 21122000443344 in words is "twenty-one trillion, one hundred twenty-two billion, four hundred forty-three thousand, three hundred forty-four".