123100330001221 has 4 divisors (see below), whose sum is σ = 123102294671200. Its totient is φ = 123098365331244.

The previous prime is 123100330001101. The next prime is 123100330001261. The reversal of 123100330001221 is 122100033001321.

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 123100330001221 - 2¹¹ = 123100329999173 is a prime.

It is a super-2 number, since 2×123100330001221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123100330001261) 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, 982241001 + ... + 982366318.

It is an arithmetic number, because the mean of its divisors is an integer number (30775573667800).

Almost surely, 2^{123100330001221} is an apocalyptic number.

It is an amenable number.

123100330001221 is a deficient number, since it is larger than the sum of its proper divisors (1964669979).

123100330001221 is an equidigital number, since it uses as much as digits as its factorization.

123100330001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964669978.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123100330001221 its reverse (122100033001321), we get a palindrome (245200363002542).

The spelling of 123100330001221 in words is "one hundred twenty-three trillion, one hundred billion, three hundred thirty million, one thousand, two hundred twenty-one".