1122200100021 has 128 divisors (see below), whose sum is σ = 2171867443200. Its totient is φ = 496016732160.

The previous prime is 1122200100001. The next prime is 1122200100071. The reversal of 1122200100021 is 1200010022211.

It is not a de Polignac number, because 1122200100021 - 2⁹ = 1122200099509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122200100001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1845325 + ... + 2376893.

It is an arithmetic number, because the mean of its divisors is an integer number (16967714400).

Almost surely, 2^{1122200100021} is an apocalyptic number.

1122200100021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1122200100021 is a deficient number, since it is larger than the sum of its proper divisors (1049667343179).

1122200100021 is a wasteful number, since it uses less digits than its factorization.

1122200100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531659.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1122200100021 its reverse (1200010022211), we get a palindrome (2322210122232).

It can be divided in two parts, 1122200 and 100021, that added together give a palindrome (1222221).

The spelling of 1122200100021 in words is "one trillion, one hundred twenty-two billion, two hundred million, one hundred thousand, twenty-one".