20010121023 has 8 divisors (see below), whose sum is σ = 26779345200. Its totient is φ = 13290488768.

The previous prime is 20010121013. The next prime is 20010121063. The reversal of 20010121023 is 32012101002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20010121023 - 2⁴ = 20010121007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010121013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12397038 + ... + 12398651.

It is an arithmetic number, because the mean of its divisors is an integer number (3347418150).

Almost surely, 2^20010121023 is an apocalyptic number.

20010121023 is a deficient number, since it is larger than the sum of its proper divisors (6769224177).

20010121023 is a wasteful number, since it uses less digits than its factorization.

20010121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24795961.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20010121023 its reverse (32012101002), we get a palindrome (52022222025).

The spelling of 20010121023 in words is "twenty billion, ten million, one hundred twenty-one thousand, twenty-three".