2251214421 has 8 divisors (see below), whose sum is σ = 3082744224. Its totient is φ = 1460247120.

The previous prime is 2251214323. The next prime is 2251214423. The reversal of 2251214421 is 1244121522.

2251214421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2251214421 - 2⁷ = 2251214293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2251214391 and 2251214400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251214423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10140495 + ... + 10140716.

It is an arithmetic number, because the mean of its divisors is an integer number (385343028).

Almost surely, 2^2251214421 is an apocalyptic number.

It is an amenable number.

2251214421 is a deficient number, since it is larger than the sum of its proper divisors (831529803).

2251214421 is a wasteful number, since it uses less digits than its factorization.

2251214421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20281251.

The product of its digits is 1280, while the sum is 24.

The square root of 2251214421 is about 47446.9642969916. The cubic root of 2251214421 is about 1310.6064090264.

Adding to 2251214421 its reverse (1244121522), we get a palindrome (3495335943).

The spelling of 2251214421 in words is "two billion, two hundred fifty-one million, two hundred fourteen thousand, four hundred twenty-one".