2121200101023 has 8 divisors (see below), whose sum is σ = 2828278226688. Its totient is φ = 1414127688024.

The previous prime is 2121200101019. The next prime is 2121200101049. The reversal of 2121200101023 is 3201010021212.

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

It is not a de Polignac number, because 2121200101023 - 2² = 2121200101019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121200100993 and 2121200101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121200101003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469911 + ... + 2112632.

It is an arithmetic number, because the mean of its divisors is an integer number (353534778336).

Almost surely, 2^{2121200101023} is an apocalyptic number.

2121200101023 is a deficient number, since it is larger than the sum of its proper divisors (707078125665).

2121200101023 is a wasteful number, since it uses less digits than its factorization.

2121200101023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856333.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2121200101023 its reverse (3201010021212), we get a palindrome (5322210122235).

The spelling of 2121200101023 in words is "two trillion, one hundred twenty-one billion, two hundred million, one hundred one thousand, twenty-three".