21141022320 has 120 divisors (see below), whose sum is σ = 77453047152. Its totient is φ = 5125094400.

The previous prime is 21141022313. The next prime is 21141022321. The reversal of 21141022320 is 2322014112.

It is a happy number.

21141022320 is a `hidden beast` number, since 2 + 11 + 410 + 223 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21141022293 and 21141022302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21141022321) 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, 1326741 + ... + 1342580.

Almost surely, 2^21141022320 is an apocalyptic number.

21141022320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21141022320 is an abundant number, since it is smaller than the sum of its proper divisors (56312024832).

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

21141022320 is a wasteful number, since it uses less digits than its factorization.

21141022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669351 (or 2669342 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21141022320 its reverse (2322014112), we get a palindrome (23463036432).

The spelling of 21141022320 in words is "twenty-one billion, one hundred forty-one million, twenty-two thousand, three hundred twenty".