2121010002023 has 4 divisors (see below), whose sum is σ = 2313829093128. Its totient is φ = 1928190910920.

The previous prime is 2121010001993. The next prime is 2121010002047. The reversal of 2121010002023 is 3202000101212.

It is a happy number.

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 2121010002023 - 2¹⁰ = 2121010000999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121010001989 and 2121010002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121010002053) 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, 96409545536 + ... + 96409545557.

It is an arithmetic number, because the mean of its divisors is an integer number (578457273282).

Almost surely, 2^{2121010002023} is an apocalyptic number.

2121010002023 is a deficient number, since it is larger than the sum of its proper divisors (192819091105).

2121010002023 is a wasteful number, since it uses less digits than its factorization.

2121010002023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192819091104.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2121010002023 its reverse (3202000101212), we get a palindrome (5323010103235).

The spelling of 2121010002023 in words is "two trillion, one hundred twenty-one billion, ten million, two thousand, twenty-three".