1121110200021 has 16 divisors (see below), whose sum is σ = 1709207971328. Its totient is φ = 640315810800.

The previous prime is 1121110200013. The next prime is 1121110200071. The reversal of 1121110200021 is 1200020111211.

It is not a de Polignac number, because 1121110200021 - 2³ = 1121110200013 is a prime.

It is a super-2 number, since 2×1121110200021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121110200071) 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, 13231315 + ... + 13315776.

It is an arithmetic number, because the mean of its divisors is an integer number (106825498208).

Almost surely, 2^{1121110200021} is an apocalyptic number.

It is an amenable number.

1121110200021 is a deficient number, since it is larger than the sum of its proper divisors (588097771307).

1121110200021 is a wasteful number, since it uses less digits than its factorization.

1121110200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26549112.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1121110200021 its reverse (1200020111211), we get a palindrome (2321130311232).

The spelling of 1121110200021 in words is "one trillion, one hundred twenty-one billion, one hundred ten million, two hundred thousand, twenty-one".