2123620111 has 2 divisors, whose sum is σ = 2123620112. Its totient is φ = 2123620110.

The previous prime is 2123620087. The next prime is 2123620117. The reversal of 2123620111 is 1110263212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2123620111 - 2²⁷ = 1989402383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123620117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061810055 + 1061810056.

It is an arithmetic number, because the mean of its divisors is an integer number (1061810056).

Almost surely, 2^2123620111 is an apocalyptic number.

2123620111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123620111 is an equidigital number, since it uses as much as digits as its factorization.

2123620111 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2123620111 is about 46082.7528583091. The cubic root of 2123620111 is about 1285.3624540386.

Adding to 2123620111 its reverse (1110263212), we get a palindrome (3233883323).

The spelling of 2123620111 in words is "two billion, one hundred twenty-three million, six hundred twenty thousand, one hundred eleven".