20211324320 has 48 divisors (see below), whose sum is σ = 52090099488. Its totient is φ = 7349571840.

The previous prime is 20211324311. The next prime is 20211324377. The reversal of 20211324320 is 2342311202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20211324292 and 20211324301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5740094 + ... + 5743613.

It is an arithmetic number, because the mean of its divisors is an integer number (1085210406).

Almost surely, 2^20211324320 is an apocalyptic number.

20211324320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211324320 is an abundant number, since it is smaller than the sum of its proper divisors (31878775168).

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

20211324320 is a wasteful number, since it uses less digits than its factorization.

20211324320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11483733 (or 11483725 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20211324320 its reverse (2342311202), we get a palindrome (22553635522).

The spelling of 20211324320 in words is "twenty billion, two hundred eleven million, three hundred twenty-four thousand, three hundred twenty".