2423201021 has 4 divisors (see below), whose sum is σ = 2442281472. Its totient is φ = 2404120572.

The previous prime is 2423201009. The next prime is 2423201023. The reversal of 2423201021 is 1201023242.

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 a cyclic number.

It is not a de Polignac number, because 2423201021 - 2¹⁰ = 2423199997 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 (2423201023) 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, 9540035 + ... + 9540288.

It is an arithmetic number, because the mean of its divisors is an integer number (610570368).

Almost surely, 2^2423201021 is an apocalyptic number.

It is an amenable number.

2423201021 is a deficient number, since it is larger than the sum of its proper divisors (19080451).

2423201021 is a wasteful number, since it uses less digits than its factorization.

2423201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19080450.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2423201021 is about 49226.0197558161. The cubic root of 2423201021 is about 1343.1663853769.

Adding to 2423201021 its reverse (1201023242), we get a palindrome (3624224263).

The spelling of 2423201021 in words is "two billion, four hundred twenty-three million, two hundred one thousand, twenty-one".