123012103022221 has 16 divisors (see below), whose sum is σ = 144387366153984. Its totient is φ = 102587465119104.

The previous prime is 123012103022209. The next prime is 123012103022251. The reversal of 123012103022221 is 122220301210321.

It is not a de Polignac number, because 123012103022221 - 2¹⁵ = 123012102989453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123012103022192 and 123012103022201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012103022251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10951656 + ... + 19130158.

It is an arithmetic number, because the mean of its divisors is an integer number (9024210384624).

Almost surely, 2^{123012103022221} is an apocalyptic number.

It is an amenable number.

123012103022221 is a deficient number, since it is larger than the sum of its proper divisors (21375263131763).

123012103022221 is an equidigital number, since it uses as much as digits as its factorization.

123012103022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8236620.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 123012103022221 its reverse (122220301210321), we get a palindrome (245232404232542).

The spelling of 123012103022221 in words is "one hundred twenty-three trillion, twelve billion, one hundred three million, twenty-two thousand, two hundred twenty-one".