123021121000002 has 16 divisors (see below), whose sum is σ = 248431001632320. Its totient is φ = 40608913727952.

The previous prime is 123021120999991. The next prime is 123021121000007. The reversal of 123021121000002 is 200000121120321.

123021121000002 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (123021121000007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99531650677 + ... + 99531651912.

It is an arithmetic number, because the mean of its divisors is an integer number (15526937602020).

Almost surely, 2^{123021121000002} is an apocalyptic number.

123021121000002 is an abundant number, since it is smaller than the sum of its proper divisors (125409880632318).

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

123021121000002 is a wasteful number, since it uses less digits than its factorization.

123021121000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199063302697.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 123021121000002 its reverse (200000121120321), we get a palindrome (323021242120323).

The spelling of 123021121000002 in words is "one hundred twenty-three trillion, twenty-one billion, one hundred twenty-one million, two", and thus it is an aban number.