210100120121023 has 4 divisors (see below), whose sum is σ = 229200131041128. Its totient is φ = 191000109200920.

The previous prime is 210100120121009. The next prime is 210100120121029. The reversal of 210100120121023 is 320121021001012.

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 210100120121023 - 2⁴¹ = 207901096865471 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210100120120988 and 210100120121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100120121029) 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, 9550005460036 + ... + 9550005460057.

It is an arithmetic number, because the mean of its divisors is an integer number (57300032760282).

Almost surely, 2^{210100120121023} is an apocalyptic number.

210100120121023 is a deficient number, since it is larger than the sum of its proper divisors (19100010920105).

210100120121023 is a wasteful number, since it uses less digits than its factorization.

210100120121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19100010920104.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 210100120121023 its reverse (320121021001012), we get a palindrome (530221141122035).

The spelling of 210100120121023 in words is "two hundred ten trillion, one hundred billion, one hundred twenty million, one hundred twenty-one thousand, twenty-three".