2421220023 has 12 divisors (see below), whose sum is σ = 3591840408. Its totient is φ = 1570520880.

The previous prime is 2421220013. The next prime is 2421220033. The reversal of 2421220023 is 3200221242.

2421220023 is a `hidden beast` number, since 2 + 421 + 220 + 0 + 23 = 666.

It is an interprime number because it is at equal distance from previous prime (2421220013) and next prime (2421220033).

It is not a de Polignac number, because 2421220023 - 2³⁰ = 1347478199 is a prime.

It is a super-2 number, since 2×2421220023² = 11724612799552241058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2421219978 and 2421220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421220013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3635133 + ... + 3635798.

It is an arithmetic number, because the mean of its divisors is an integer number (299320034).

Almost surely, 2^2421220023 is an apocalyptic number.

2421220023 is a deficient number, since it is larger than the sum of its proper divisors (1170620385).

2421220023 is a wasteful number, since it uses less digits than its factorization.

2421220023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270974 (or 7270971 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2421220023 is about 49205.8941896192. The cubic root of 2421220023 is about 1342.8002669917.

Adding to 2421220023 its reverse (3200221242), we get a palindrome (5621441265).

The spelling of 2421220023 in words is "two billion, four hundred twenty-one million, two hundred twenty thousand, twenty-three".