121221101104 has 10 divisors (see below), whose sum is σ = 234865883420. Its totient is φ = 60610550544.

The previous prime is 121221101087. The next prime is 121221101137. The reversal of 121221101104 is 401101122121.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 7576318819 = 121221101104 / (1 + 2 + 1 + 2 + 2 + 1 + 1 + 0 + 1 + 1 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3788159394 + ... + 3788159425.

It is an arithmetic number, because the mean of its divisors is an integer number (23486588342).

Almost surely, 2^121221101104 is an apocalyptic number.

It is an amenable number.

121221101104 is a deficient number, since it is larger than the sum of its proper divisors (113644782316).

121221101104 is an equidigital number, since it uses as much as digits as its factorization.

121221101104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7576318827 (or 7576318821 counting only the distinct ones).

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

Adding to 121221101104 its reverse (401101122121), we get a palindrome (522322223225).

The spelling of 121221101104 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, one hundred four".