121210120001 has 4 divisors (see below), whose sum is σ = 125120123904. Its totient is φ = 117300116100.

The previous prime is 121210119983. The next prime is 121210120007. The reversal of 121210120001 is 100021012121.

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 a de Polignac number, because none of the positive numbers 2^k-121210120001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121210120007) 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, 1955001905 + ... + 1955001966.

It is an arithmetic number, because the mean of its divisors is an integer number (31280030976).

Almost surely, 2^121210120001 is an apocalyptic number.

It is an amenable number.

121210120001 is a deficient number, since it is larger than the sum of its proper divisors (3910003903).

121210120001 is an equidigital number, since it uses as much as digits as its factorization.

121210120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910003902.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121210120001 its reverse (100021012121), we get a palindrome (221231132122).

The spelling of 121210120001 in words is "one hundred twenty-one billion, two hundred ten million, one hundred twenty thousand, one".