121122011211001 has 4 divisors (see below), whose sum is σ = 121127232685732. Its totient is φ = 121116789736272.

The previous prime is 121122011210957. The next prime is 121122011211029. The reversal of 121122011211001 is 100112110221121.

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 15997592090601 + 105124419120400 = 3999699^2 + 10253020^2 .

It is a cyclic number.

It is not a de Polignac number, because 121122011211001 - 2⁹ = 121122011210489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121122011211301) 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, 2610702570 + ... + 2610748963.

It is an arithmetic number, because the mean of its divisors is an integer number (30281808171433).

Almost surely, 2^{121122011211001} is an apocalyptic number.

It is an amenable number.

121122011211001 is a deficient number, since it is larger than the sum of its proper divisors (5221474731).

121122011211001 is an equidigital number, since it uses as much as digits as its factorization.

121122011211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5221474730.

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

Adding to 121122011211001 its reverse (100112110221121), we get a palindrome (221234121432122).

The spelling of 121122011211001 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, eleven million, two hundred eleven thousand, one".