20101023204 has 48 divisors (see below), whose sum is σ = 47334336000. Its totient is φ = 6638858496.

The previous prime is 20101023179. The next prime is 20101023211. The reversal of 20101023204 is 40232010102.

It is a super-2 number, since 2×20101023204² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717549 + ... + 745035.

It is an arithmetic number, because the mean of its divisors is an integer number (986132000).

Almost surely, 2^20101023204 is an apocalyptic number.

It is an amenable number.

20101023204 is an abundant number, since it is smaller than the sum of its proper divisors (27233312796).

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

20101023204 is a wasteful number, since it uses less digits than its factorization.

20101023204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28052 (or 28050 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20101023204 its reverse (40232010102), we get a palindrome (60333033306).

The spelling of 20101023204 in words is "twenty billion, one hundred one million, twenty-three thousand, two hundred four".