20423201012 has 6 divisors (see below), whose sum is σ = 35740601778. Its totient is φ = 10211600504.

The previous prime is 20423200999. The next prime is 20423201017. The reversal of 20423201012 is 21010232402.

It can be written as a sum of positive squares in only one way, i.e., 11169530596 + 9253670416 = 105686^2 + 96196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423201017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2552900123 + ... + 2552900130.

It is an arithmetic number, because the mean of its divisors is an integer number (5956766963).

Almost surely, 2^20423201012 is an apocalyptic number.

It is an amenable number.

20423201012 is a deficient number, since it is larger than the sum of its proper divisors (15317400766).

20423201012 is a wasteful number, since it uses less digits than its factorization.

20423201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105800257 (or 5105800255 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20423201012 its reverse (21010232402), we get a palindrome (41433433414).

The spelling of 20423201012 in words is "twenty billion, four hundred twenty-three million, two hundred one thousand, twelve".