1120121201221 has 4 divisors (see below), whose sum is σ = 1221950401344. Its totient is φ = 1018292001100.

The previous prime is 1120121201219. The next prime is 1120121201231. The reversal of 1120121201221 is 1221021210211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1120121201221 - 2¹ = 1120121201219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120121201195 and 1120121201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120121201231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50914600045 + ... + 50914600066.

It is an arithmetic number, because the mean of its divisors is an integer number (305487600336).

Almost surely, 2^{1120121201221} is an apocalyptic number.

1120121201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1120121201221 is a deficient number, since it is larger than the sum of its proper divisors (101829200123).

1120121201221 is a wasteful number, since it uses less digits than its factorization.

1120121201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101829200122.

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

Adding to 1120121201221 its reverse (1221021210211), we get a palindrome (2341142411432).

The spelling of 1120121201221 in words is "one trillion, one hundred twenty billion, one hundred twenty-one million, two hundred one thousand, two hundred twenty-one".