2420551221 has 16 divisors (see below), whose sum is σ = 3535422528. Its totient is φ = 1460908800.

The previous prime is 2420551219. The next prime is 2420551223. The reversal of 2420551221 is 1221550242.

It is an interprime number because it is at equal distance from previous prime (2420551219) and next prime (2420551223).

It is not a de Polignac number, because 2420551221 - 2¹ = 2420551219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2420551191 and 2420551200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2420551223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144226 + ... + 160131.

It is an arithmetic number, because the mean of its divisors is an integer number (220963908).

Almost surely, 2^2420551221 is an apocalyptic number.

It is an amenable number.

2420551221 is a deficient number, since it is larger than the sum of its proper divisors (1114871307).

2420551221 is a wasteful number, since it uses less digits than its factorization.

2420551221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304612.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2420551221 is about 49199.0977661176. The cubic root of 2420551221 is about 1342.6766171791.

The spelling of 2420551221 in words is "two billion, four hundred twenty million, five hundred fifty-one thousand, two hundred twenty-one".