2345022021 has 4 divisors (see below), whose sum is σ = 3126696032. Its totient is φ = 1563348012.

The previous prime is 2345021993. The next prime is 2345022037. The reversal of 2345022021 is 1202205432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2345022021 - 2⁶ = 2345021957 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 (2345022521) 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, 390837001 + ... + 390837006.

It is an arithmetic number, because the mean of its divisors is an integer number (781674008).

Almost surely, 2^2345022021 is an apocalyptic number.

It is an amenable number.

2345022021 is a deficient number, since it is larger than the sum of its proper divisors (781674011).

2345022021 is an equidigital number, since it uses as much as digits as its factorization.

2345022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781674010.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2345022021 is about 48425.4274219650. The cubic root of 2345022021 is about 1328.5634745093.

Adding to 2345022021 its reverse (1202205432), we get a palindrome (3547227453).

The spelling of 2345022021 in words is "two billion, three hundred forty-five million, twenty-two thousand, twenty-one".