1121120100021 has 8 divisors (see below), whose sum is σ = 1506597090304. Its totient is φ = 741528254880.

The previous prime is 1121120100019. The next prime is 1121120100031. The reversal of 1121120100021 is 1200010211211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121120100021 - 2¹ = 1121120100019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121120100011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1471285840 + ... + 1471286601.

It is an arithmetic number, because the mean of its divisors is an integer number (188324636288).

Almost surely, 2^{1121120100021} is an apocalyptic number.

It is an amenable number.

1121120100021 is a deficient number, since it is larger than the sum of its proper divisors (385476990283).

1121120100021 is a wasteful number, since it uses less digits than its factorization.

1121120100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942572571.

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

Adding to 1121120100021 its reverse (1200010211211), we get a palindrome (2321130311232).

The spelling of 1121120100021 in words is "one trillion, one hundred twenty-one billion, one hundred twenty million, one hundred thousand, twenty-one".