210001121023 has 4 divisors (see below), whose sum is σ = 222354128160. Its totient is φ = 197648113888.

The previous prime is 210001120991. The next prime is 210001121089. The reversal of 210001121023 is 320121100012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210001121023 - 2⁵ = 210001120991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210001120994 and 210001121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001421023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6176503543 + ... + 6176503576.

It is an arithmetic number, because the mean of its divisors is an integer number (55588532040).

Almost surely, 2^210001121023 is an apocalyptic number.

210001121023 is a deficient number, since it is larger than the sum of its proper divisors (12353007137).

210001121023 is a wasteful number, since it uses less digits than its factorization.

210001121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12353007136.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 210001121023 its reverse (320121100012), we get a palindrome (530122221035).

The spelling of 210001121023 in words is "two hundred ten billion, one million, one hundred twenty-one thousand, twenty-three".