121233331001 has 2 divisors, whose sum is σ = 121233331002. Its totient is φ = 121233331000.

The previous prime is 121233330991. The next prime is 121233331031. The reversal of 121233331001 is 100133332121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95617008400 + 25616322601 = 309220^2 + 160051^2 .

It is a cyclic number.

It is not a de Polignac number, because 121233331001 - 2²² = 121229136697 is a prime.

It is not a weakly prime, because it can be changed into another prime (121233331031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60616665500 + 60616665501.

It is an arithmetic number, because the mean of its divisors is an integer number (60616665501).

Almost surely, 2^121233331001 is an apocalyptic number.

It is an amenable number.

121233331001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121233331001 is an equidigital number, since it uses as much as digits as its factorization.

121233331001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 121233331001 its reverse (100133332121), we get a palindrome (221366663122).

The spelling of 121233331001 in words is "one hundred twenty-one billion, two hundred thirty-three million, three hundred thirty-one thousand, one".