2021022111100 has 36 divisors (see below), whose sum is σ = 4413551887864. Its totient is φ = 803259737280.

The previous prime is 2021022111079. The next prime is 2021022111109. The reversal of 2021022111100 is 11112201202.

It is a super-4 number, since 4×2021022111100⁴ (a number of 50 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021022111109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64348062 + ... + 64379461.

Almost surely, 2^{2021022111100} is an apocalyptic number.

2021022111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021022111100 is an abundant number, since it is smaller than the sum of its proper divisors (2392529776764).

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

2021022111100 is a wasteful number, since it uses less digits than its factorization.

2021022111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128727694 (or 128727687 counting only the distinct ones).

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

Adding to 2021022111100 its reverse (11112201202), we get a palindrome (2032134312302).

The spelling of 2021022111100 in words is "two trillion, twenty-one billion, twenty-two million, one hundred eleven thousand, one hundred".