120121321110123 has 16 divisors (see below), whose sum is σ = 165447986435072. Its totient is φ = 77441509404000.

The previous prime is 120121321110113. The next prime is 120121321110137. The reversal of 120121321110123 is 321011123121021.

It is not a de Polignac number, because 120121321110123 - 2⁴ = 120121321110107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120121321110123.

It is not an unprimeable number, because it can be changed into a prime (120121321110113) 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, 467513533 + ... + 467770398.

It is an arithmetic number, because the mean of its divisors is an integer number (10340499152192).

Almost surely, 2^{120121321110123} is an apocalyptic number.

120121321110123 is a deficient number, since it is larger than the sum of its proper divisors (45326665324949).

120121321110123 is a wasteful number, since it uses less digits than its factorization.

120121321110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935285346.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 120121321110123 its reverse (321011123121021), we get a palindrome (441132444231144).

The spelling of 120121321110123 in words is "one hundred twenty trillion, one hundred twenty-one billion, three hundred twenty-one million, one hundred ten thousand, one hundred twenty-three".