22121010043632 has 120 divisors (see below), whose sum is σ = 62942716528848. Its totient is φ = 7250516582400.

The previous prime is 22121010043631. The next prime is 22121010043637. The reversal of 22121010043632 is 23634001012122.

22121010043632 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 10 + 10 + 0 + 4 + 3 + 632 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 22121010043596 and 22121010043605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121010043631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27742032 + ... + 28528272.

Almost surely, 2^{22121010043632} 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 22121010043632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31471358264424).

22121010043632 is an abundant number, since it is smaller than the sum of its proper divisors (40821706485216).

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

22121010043632 is a wasteful number, since it uses less digits than its factorization.

22121010043632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789519 (or 789510 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 22121010043632 its reverse (23634001012122), we get a palindrome (45755011055754).

The spelling of 22121010043632 in words is "twenty-two trillion, one hundred twenty-one billion, ten million, forty-three thousand, six hundred thirty-two".