121120002111001 has 4 divisors (see below), whose sum is σ = 121141735474212. Its totient is φ = 121098268747792.

The previous prime is 121120002110981. The next prime is 121120002111019. The reversal of 121120002111001 is 100111200021121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2560243205776 + 118559758905225 = 1600076^2 + 10888515^2 .

It is a cyclic number.

It is not a de Polignac number, because 121120002111001 - 2¹⁷ = 121120001979929 is a prime.

It is a super-2 number, since 2×121120002111001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121120002111091) 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, 10866673246 + ... + 10866684391.

It is an arithmetic number, because the mean of its divisors is an integer number (30285433868553).

Almost surely, 2^{121120002111001} is an apocalyptic number.

It is an amenable number.

121120002111001 is a deficient number, since it is larger than the sum of its proper divisors (21733363211).

121120002111001 is an equidigital number, since it uses as much as digits as its factorization.

121120002111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21733363210.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121120002111001 its reverse (100111200021121), we get a palindrome (221231202132122).

The spelling of 121120002111001 in words is "one hundred twenty-one trillion, one hundred twenty billion, two million, one hundred eleven thousand, one".