111000212021020 has 96 divisors (see below), whose sum is σ = 270921959400960. Its totient is φ = 37411323513600.

The previous prime is 111000212020981. The next prime is 111000212021029. The reversal of 111000212021020 is 20120212000111.

It is a super-2 number, since 2×111000212021020² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000212021029) 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, 436835247 + ... + 437089273.

It is an arithmetic number, because the mean of its divisors is an integer number (2822103743760).

Almost surely, 2^{111000212021020} is an apocalyptic number.

111000212021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111000212021020 is an abundant number, since it is smaller than the sum of its proper divisors (159921747379940).

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

111000212021020 is a wasteful number, since it uses less digits than its factorization.

111000212021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307003 (or 307001 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111000212021020 its reverse (20120212000111), we get a palindrome (131120424021131).

The spelling of 111000212021020 in words is "one hundred eleven trillion, two hundred twelve million, twenty-one thousand, twenty".