20201102021023 has 16 divisors (see below), whose sum is σ = 25193314738944. Its totient is φ = 15736415204160.

The previous prime is 20201102020991. The next prime is 20201102021069. The reversal of 20201102021023 is 32012020110202.

It is a happy number.

It is not a de Polignac number, because 20201102021023 - 2⁵ = 20201102020991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20201102020988 and 20201102021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201102021323) 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, 38934390 + ... + 39449827.

It is an arithmetic number, because the mean of its divisors is an integer number (1574582171184).

Almost surely, 2^{20201102021023} is an apocalyptic number.

20201102021023 is a deficient number, since it is larger than the sum of its proper divisors (4992212717921).

20201102021023 is a wasteful number, since it uses less digits than its factorization.

20201102021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78387582.

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

Adding to 20201102021023 its reverse (32012020110202), we get a palindrome (52213122131225).

The spelling of 20201102021023 in words is "twenty trillion, two hundred one billion, one hundred two million, twenty-one thousand, twenty-three".