121755223001 has 4 divisors (see below), whose sum is σ = 122094374400. Its totient is φ = 121416071604.

The previous prime is 121755222923. The next prime is 121755223003. The reversal of 121755223001 is 100322557121.

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 121755223001 - 2²² = 121751028697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121755223003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169575161 + ... + 169575878.

It is an arithmetic number, because the mean of its divisors is an integer number (30523593600).

Almost surely, 2^121755223001 is an apocalyptic number.

It is an amenable number.

121755223001 is a deficient number, since it is larger than the sum of its proper divisors (339151399).

121755223001 is an equidigital number, since it uses as much as digits as its factorization.

121755223001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339151398.

The product of its (nonzero) digits is 4200, while the sum is 29.

The spelling of 121755223001 in words is "one hundred twenty-one billion, seven hundred fifty-five million, two hundred twenty-three thousand, one".