20123401012 has 48 divisors (see below), whose sum is σ = 41479401600. Its totient is φ = 8421586560.

The previous prime is 20123401003. The next prime is 20123401013. The reversal of 20123401012 is 21010432102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123401013) 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, 177289 + ... + 267727.

It is an arithmetic number, because the mean of its divisors is an integer number (864154200).

Almost surely, 2^20123401012 is an apocalyptic number.

20123401012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20123401012 is an abundant number, since it is smaller than the sum of its proper divisors (21356000588).

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

20123401012 is a wasteful number, since it uses less digits than its factorization.

20123401012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90856 (or 90854 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20123401012 its reverse (21010432102), we get a palindrome (41133833114).

The spelling of 20123401012 in words is "twenty billion, one hundred twenty-three million, four hundred one thousand, twelve".