2220577129 has 3 divisors (see below), whose sum is σ = 2220624253. Its totient is φ = 2220530006.

The previous prime is 2220577091. The next prime is 2220577141. The reversal of 2220577129 is 9217750222.

The square root of 2220577129 is 47123.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2220577129 - 2¹¹ = 2220575081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220577529) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23562 + ... + 70684.

Almost surely, 2^2220577129 is an apocalyptic number.

2220577129 is the 47123-rd square number.

2220577129 is the 23562-nd centered octagonal number.

It is an amenable number.

2220577129 is a deficient number, since it is larger than the sum of its proper divisors (47124).

2220577129 is an frugal number, since it uses more digits than its factorization.

2220577129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94246 (or 47123 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The cubic root of 2220577129 is about 1304.6337847838.

The spelling of 2220577129 in words is "two billion, two hundred twenty million, five hundred seventy-seven thousand, one hundred twenty-nine".