2251511222 has 8 divisors (see below), whose sum is σ = 3493724400. Its totient is φ = 1086936424.

The previous prime is 2251511219. The next prime is 2251511233. The reversal of 2251511222 is 2221151522.

2251511222 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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19409522 + ... + 19409637.

It is an arithmetic number, because the mean of its divisors is an integer number (436715550).

Almost surely, 2^2251511222 is an apocalyptic number.

2251511222 is a deficient number, since it is larger than the sum of its proper divisors (1242213178).

2251511222 is a wasteful number, since it uses less digits than its factorization.

2251511222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38819190.

The product of its digits is 800, while the sum is 23.

The square root of 2251511222 is about 47450.0919071818. The cubic root of 2251511222 is about 1310.6640034512.

Adding to 2251511222 its reverse (2221151522), we get a palindrome (4472662744).

The spelling of 2251511222 in words is "two billion, two hundred fifty-one million, five hundred eleven thousand, two hundred twenty-two".