102021212023 has 4 divisors (see below), whose sum is σ = 102032765640. Its totient is φ = 102009658408.

The previous prime is 102021212021. The next prime is 102021212077. The reversal of 102021212023 is 320212120201.

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 102021212023 - 2¹ = 102021212021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102021211988 and 102021212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021212021) 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, 5763553 + ... + 5781226.

It is an arithmetic number, because the mean of its divisors is an integer number (25508191410).

Almost surely, 2^102021212023 is an apocalyptic number.

102021212023 is a deficient number, since it is larger than the sum of its proper divisors (11553617).

102021212023 is an equidigital number, since it uses as much as digits as its factorization.

102021212023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11553616.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 102021212023 its reverse (320212120201), we get a palindrome (422233332224).

The spelling of 102021212023 in words is "one hundred two billion, twenty-one million, two hundred twelve thousand, twenty-three".