21641007223000 has 128 divisors (see below), whose sum is σ = 56285922738240. Its totient is φ = 7720976640000.

The previous prime is 21641007222997. The next prime is 21641007223001. The reversal of 21641007223000 is 32270014612.

It is a self number, because there is not a number n which added to its sum of digits gives 21641007223000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21641007223001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17977041 + ... + 19143040.

Almost surely, 2^{21641007223000} is an apocalyptic number.

21641007223000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21641007223000 is an abundant number, since it is smaller than the sum of its proper divisors (34644915515240).

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

21641007223000 is a wasteful number, since it uses less digits than its factorization.

21641007223000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37120166 (or 37120152 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 21641007223000 its reverse (32270014612), we get a palindrome (21673277237612).

The spelling of 21641007223000 in words is "twenty-one trillion, six hundred forty-one billion, seven million, two hundred twenty-three thousand".