2121023 has 2 divisors, whose sum is σ = 2121024. Its totient is φ = 2121022.

The previous prime is 2121017. The next prime is 2121029. The reversal of 2121023 is 3201212.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2121017) and next prime (2121029).

It is a cyclic number.

It is not a de Polignac number, because 2121023 - 2²⁰ = 1072447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120995 and 2121013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060511 + 1060512.

It is an arithmetic number, because the mean of its divisors is an integer number (1060512).

2^2121023 is an apocalyptic number.

2121023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121023 is an equidigital number, since it uses as much as digits as its factorization.

2121023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2121023 is about 1456.3732351290. The cubic root of 2121023 is about 128.4838256275.

Adding to 2121023 its reverse (3201212), we get a palindrome (5322235).

The spelling of 2121023 in words is "two million, one hundred twenty-one thousand, twenty-three".