1121201102221 has 12 divisors (see below), whose sum is σ = 1229454148480. Its totient is φ = 1021207826880.

The previous prime is 1121201102209. The next prime is 1121201102243. The reversal of 1121201102221 is 1222011021211.

It is not a de Polignac number, because 1121201102221 - 2²⁷ = 1121066884493 is a prime.

It is a super-2 number, since 2×1121201102221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121201102195 and 1121201102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121201102261) 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, 62565051 + ... + 62582968.

Almost surely, 2^{1121201102221} is an apocalyptic number.

It is an amenable number.

1121201102221 is a deficient number, since it is larger than the sum of its proper divisors (108253046259).

1121201102221 is a wasteful number, since it uses less digits than its factorization.

1121201102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125148084 (or 125148067 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1121201102221 its reverse (1222011021211), we get a palindrome (2343212123432).

The spelling of 1121201102221 in words is "one trillion, one hundred twenty-one billion, two hundred one million, one hundred two thousand, two hundred twenty-one".