2227226721 has 16 divisors (see below), whose sum is σ = 3155155200. Its totient is φ = 1393519248.

The previous prime is 2227226717. The next prime is 2227226737. The reversal of 2227226721 is 1276227222.

It is not a de Polignac number, because 2227226721 - 2² = 2227226717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2227226711) 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, 176491 + ... + 188688.

It is an arithmetic number, because the mean of its divisors is an integer number (197197200).

Almost surely, 2^2227226721 is an apocalyptic number.

It is an amenable number.

2227226721 is a deficient number, since it is larger than the sum of its proper divisors (927928479).

2227226721 is a wasteful number, since it uses less digits than its factorization.

2227226721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365308.

The product of its digits is 18816, while the sum is 33.

The square root of 2227226721 is about 47193.5029532668. The cubic root of 2227226721 is about 1305.9347434654.

The spelling of 2227226721 in words is "two billion, two hundred twenty-seven million, two hundred twenty-six thousand, seven hundred twenty-one".