100202021023 has 6 divisors (see below), whose sum is σ = 108502780344. Its totient is φ = 92494173096.

The previous prime is 100202020969. The next prime is 100202021057. The reversal of 100202021023 is 320120202001.

It is not a de Polignac number, because 100202021023 - 2¹⁷ = 100201889951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100202020994 and 100202021012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100202721023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 296455515 + ... + 296455852.

It is an arithmetic number, because the mean of its divisors is an integer number (18083796724).

Almost surely, 2^100202021023 is an apocalyptic number.

100202021023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

100202021023 is a deficient number, since it is larger than the sum of its proper divisors (8300759321).

100202021023 is an equidigital number, since it uses as much as digits as its factorization.

100202021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592911393 (or 592911380 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 100202021023 its reverse (320120202001), we get a palindrome (420322223024).

The spelling of 100202021023 in words is "one hundred billion, two hundred two million, twenty-one thousand, twenty-three".