123210121434 has 64 divisors (see below), whose sum is σ = 270472576896. Its totient is φ = 37257836544.

The previous prime is 123210121421. The next prime is 123210121487. The reversal of 123210121434 is 434121012321.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251262 + ... + 556374.

It is an arithmetic number, because the mean of its divisors is an integer number (4226134014).

Almost surely, 2^123210121434 is an apocalyptic number.

123210121434 is an abundant number, since it is smaller than the sum of its proper divisors (147262455462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123210121434 is a wasteful number, since it uses less digits than its factorization.

123210121434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305279.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 123210121434 its reverse (434121012321), we get a palindrome (557331133755).

The spelling of 123210121434 in words is "one hundred twenty-three billion, two hundred ten million, one hundred twenty-one thousand, four hundred thirty-four".