121331212201 has 4 divisors (see below), whose sum is σ = 125245122304. Its totient is φ = 117417302100.

The previous prime is 121331212153. The next prime is 121331212207. The reversal of 121331212201 is 102212133121.

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 121331212201 - 2²³ = 121322823593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121331212207) 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, 1956955005 + ... + 1956955066.

It is an arithmetic number, because the mean of its divisors is an integer number (31311280576).

Almost surely, 2^121331212201 is an apocalyptic number.

It is an amenable number.

121331212201 is a deficient number, since it is larger than the sum of its proper divisors (3913910103).

121331212201 is an equidigital number, since it uses as much as digits as its factorization.

121331212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913910102.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121331212201 its reverse (102212133121), we get a palindrome (223543345322).

The spelling of 121331212201 in words is "one hundred twenty-one billion, three hundred thirty-one million, two hundred twelve thousand, two hundred one".