121120222111021 has 8 divisors (see below), whose sum is σ = 145708537878080. Its totient is φ = 98353263067488.

The previous prime is 121120222110997. The next prime is 121120222111033. The reversal of 121120222111021 is 120111222021121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121120222111021 - 2¹⁵ = 121120222078253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121120222111021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120222111621) 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, 455339180736 + ... + 455339181001.

It is an arithmetic number, because the mean of its divisors is an integer number (18213567234760).

Almost surely, 2^{121120222111021} is an apocalyptic number.

It is an amenable number.

121120222111021 is a deficient number, since it is larger than the sum of its proper divisors (24588315767059).

121120222111021 is an equidigital number, since it uses as much as digits as its factorization.

121120222111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910678361763.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121120222111021 its reverse (120111222021121), we get a palindrome (241231444132142).

The spelling of 121120222111021 in words is "one hundred twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, one hundred eleven thousand, twenty-one".