2121031222223 has 16 divisors (see below), whose sum is σ = 2170534514400. Its totient is φ = 2072032097280.

The previous prime is 2121031222213. The next prime is 2121031222259. The reversal of 2121031222223 is 3222221301212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2121031222223 - 2²² = 2121027027919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121031222213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8713415 + ... + 8953527.

It is an arithmetic number, because the mean of its divisors is an integer number (135658407150).

Almost surely, 2^{2121031222223} is an apocalyptic number.

2121031222223 is a deficient number, since it is larger than the sum of its proper divisors (49503292177).

2121031222223 is a wasteful number, since it uses less digits than its factorization.

2121031222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241162.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2121031222223 its reverse (3222221301212), we get a palindrome (5343252523435).

The spelling of 2121031222223 in words is "two trillion, one hundred twenty-one billion, thirty-one million, two hundred twenty-two thousand, two hundred twenty-three".