20211313122220 has 96 divisors (see below), whose sum is σ = 46426903742016. Its totient is φ = 7329812582400.

The previous prime is 20211313122197. The next prime is 20211313122227. The reversal of 20211313122220 is 2222131311202.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 20211313122191 and 20211313122200.

It is not an unprimeable number, because it can be changed into a prime (20211313122227) 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, 127652224 + ... + 127810456.

It is an arithmetic number, because the mean of its divisors is an integer number (483613580646).

Almost surely, 2^{20211313122220} is an apocalyptic number.

20211313122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211313122220 is an abundant number, since it is smaller than the sum of its proper divisors (26215590619796).

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

20211313122220 is a wasteful number, since it uses less digits than its factorization.

20211313122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159811 (or 159809 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20211313122220 its reverse (2222131311202), we get a palindrome (22433444433422).

The spelling of 20211313122220 in words is "twenty trillion, two hundred eleven billion, three hundred thirteen million, one hundred twenty-two thousand, two hundred twenty".