2301223021 has 4 divisors (see below), whose sum is σ = 2304592992. Its totient is φ = 2297853052.

The previous prime is 2301223009. The next prime is 2301223033. The reversal of 2301223021 is 1203221032.

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 an interprime number because it is at equal distance from previous prime (2301223009) and next prime (2301223033).

It is a cyclic number.

It is not a de Polignac number, because 2301223021 - 2²⁵ = 2267668589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2301222986 and 2301223004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2301223081) 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, 1683961 + ... + 1685326.

It is an arithmetic number, because the mean of its divisors is an integer number (576148248).

Almost surely, 2^2301223021 is an apocalyptic number.

It is an amenable number.

2301223021 is a deficient number, since it is larger than the sum of its proper divisors (3369971).

2301223021 is an equidigital number, since it uses as much as digits as its factorization.

2301223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369970.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2301223021 is about 47971.0644138735. The cubic root of 2301223021 is about 1320.2400506569.

Adding to 2301223021 its reverse (1203221032), we get a palindrome (3504444053).

The spelling of 2301223021 in words is "two billion, three hundred one million, two hundred twenty-three thousand, twenty-one".