2221222710 has 64 divisors (see below), whose sum is σ = 6148454400. Its totient is φ = 503044992.

The previous prime is 2221222699. The next prime is 2221222727. The reversal of 2221222710 is 172221222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25630 + ... + 71409.

It is an arithmetic number, because the mean of its divisors is an integer number (96069600).

Almost surely, 2^2221222710 is an apocalyptic number.

2221222710 is an abundant number, since it is smaller than the sum of its proper divisors (3927231690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221222710 is a wasteful number, since it uses less digits than its factorization.

2221222710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97165.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 2221222710 is about 47129.8494587029. The cubic root of 2221222710 is about 1304.7602031466.

Adding to 2221222710 its reverse (172221222), we get a palindrome (2393443932).

The spelling of 2221222710 in words is "two billion, two hundred twenty-one million, two hundred twenty-two thousand, seven hundred ten".