2123210320111 has 4 divisors (see below), whose sum is σ = 2123215689352. Its totient is φ = 2123204950872.

The previous prime is 2123210320103. The next prime is 2123210320123. The reversal of 2123210320111 is 1110230123212.

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 2123210320111 - 2³ = 2123210320103 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 (2123210320811) 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, 2039841 + ... + 2899546.

It is an arithmetic number, because the mean of its divisors is an integer number (530803922338).

Almost surely, 2^{2123210320111} is an apocalyptic number.

2123210320111 is a deficient number, since it is larger than the sum of its proper divisors (5369241).

2123210320111 is an equidigital number, since it uses as much as digits as its factorization.

2123210320111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369240.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2123210320111 its reverse (1110230123212), we get a palindrome (3233440443323).

The spelling of 2123210320111 in words is "two trillion, one hundred twenty-three billion, two hundred ten million, three hundred twenty thousand, one hundred eleven".