20212211320 has 64 divisors (see below), whose sum is σ = 51999045120. Its totient is φ = 6926596224.

The previous prime is 20212211309. The next prime is 20212211329. The reversal of 20212211320 is 2311221202.

It is a happy number.

It is a super-2 number, since 2×20212211320² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20212211294 and 20212211303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212211329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611949 + ... + 644131.

It is an arithmetic number, because the mean of its divisors is an integer number (812485080).

Almost surely, 2^20212211320 is an apocalyptic number.

20212211320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212211320 is an abundant number, since it is smaller than the sum of its proper divisors (31786833800).

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

20212211320 is a wasteful number, since it uses less digits than its factorization.

20212211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34444 (or 34440 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20212211320 its reverse (2311221202), we get a palindrome (22523432522).

The spelling of 20212211320 in words is "twenty billion, two hundred twelve million, two hundred eleven thousand, three hundred twenty".