121100001121 has 4 divisors (see below), whose sum is σ = 132109092144. Its totient is φ = 110090910100.

The previous prime is 121100001107. The next prime is 121100001131.

121100001121 is nontrivially palindromic in base 10.

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 a cyclic number.

It is not a de Polignac number, because 121100001121 - 2¹⁹ = 121099476833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121100001098 and 121100001107.

It is not an unprimeable number, because it can be changed into a prime (121100001131) 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, 5504545495 + ... + 5504545516.

It is an arithmetic number, because the mean of its divisors is an integer number (33027273036).

Almost surely, 2^121100001121 is an apocalyptic number.

121100001121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121100001121 is a deficient number, since it is larger than the sum of its proper divisors (11009091023).

121100001121 is a wasteful number, since it uses less digits than its factorization.

121100001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11009091022.

The product of its (nonzero) digits is 4, while the sum is 10.

It can be divided in two parts, 12110000 and 1121, that added together give a palindrome (12111121).

The spelling of 121100001121 in words is "one hundred twenty-one billion, one hundred million, one thousand, one hundred twenty-one".