20211112232220 has 96 divisors (see below), whose sum is σ = 69650602172928. Its totient is φ = 4264322579712.

The previous prime is 20211112232191. The next prime is 20211112232249. The reversal of 20211112232220 is 2223221111202.

It is an interprime number because it is at equal distance from previous prime (20211112232191) and next prime (20211112232249).

It is a super-2 number, since 2×20211112232220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1850828994 + ... + 1850839913.

It is an arithmetic number, because the mean of its divisors is an integer number (725527105968).

Almost surely, 2^{20211112232220} is an apocalyptic number.

20211112232220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211112232220 is an abundant number, since it is smaller than the sum of its proper divisors (49439489940708).

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

20211112232220 is a wasteful number, since it uses less digits than its factorization.

20211112232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701668939 (or 3701668937 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20211112232220 its reverse (2223221111202), we get a palindrome (22434333343422).

The spelling of 20211112232220 in words is "twenty trillion, two hundred eleven billion, one hundred twelve million, two hundred thirty-two thousand, two hundred twenty".