121200321001 has 4 divisors (see below), whose sum is σ = 121219363072. Its totient is φ = 121181278932.

The previous prime is 121200320981. The next prime is 121200321007. The reversal of 121200321001 is 100123002121.

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 121200321001 - 2¹³ = 121200312809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121200321007) 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, 9511485 + ... + 9524218.

It is an arithmetic number, because the mean of its divisors is an integer number (30304840768).

Almost surely, 2^121200321001 is an apocalyptic number.

It is an amenable number.

121200321001 is a deficient number, since it is larger than the sum of its proper divisors (19042071).

121200321001 is an equidigital number, since it uses as much as digits as its factorization.

121200321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19042070.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121200321001 its reverse (100123002121), we get a palindrome (221323323122).

The spelling of 121200321001 in words is "one hundred twenty-one billion, two hundred million, three hundred twenty-one thousand, one".