2121222033023 has 4 divisors (see below), whose sum is σ = 2121224985768. Its totient is φ = 2121219080280.

The previous prime is 2121222032989. The next prime is 2121222033059. The reversal of 2121222033023 is 3203302221212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121222033023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121222033023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121222033083) 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, 375533 + ... + 2093673.

It is an arithmetic number, because the mean of its divisors is an integer number (530306246442).

Almost surely, 2^{2121222033023} is an apocalyptic number.

2121222033023 is a deficient number, since it is larger than the sum of its proper divisors (2952745).

2121222033023 is a wasteful number, since it uses less digits than its factorization.

2121222033023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952744.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 2121222033023 its reverse (3203302221212), we get a palindrome (5324524254235).

The spelling of 2121222033023 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, thirty-three thousand, twenty-three".