227013394721 has 4 divisors (see below), whose sum is σ = 230734925844. Its totient is φ = 223291863600.

The previous prime is 227013394709. The next prime is 227013394757. The reversal of 227013394721 is 127493310722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71374465600 + 155638929121 = 267160^2 + 394511^2 .

It is a cyclic number.

It is not a de Polignac number, because 227013394721 - 2²² = 227009200417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (227013394021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1860765470 + ... + 1860765591.

It is an arithmetic number, because the mean of its divisors is an integer number (57683731461).

Almost surely, 2^227013394721 is an apocalyptic number.

It is an amenable number.

227013394721 is a deficient number, since it is larger than the sum of its proper divisors (3721531123).

227013394721 is an equidigital number, since it uses as much as digits as its factorization.

227013394721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721531122.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 227013394721 in words is "two hundred twenty-seven billion, thirteen million, three hundred ninety-four thousand, seven hundred twenty-one".