1227241129 has 4 divisors (see below), whose sum is σ = 1250396676. Its totient is φ = 1204085584.

The previous prime is 1227241121. The next prime is 1227241163. The reversal of 1227241129 is 9211427221.

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 1079253904 + 147987225 = 32852^2 + 12165^2 .

It is a cyclic number.

It is not a de Polignac number, because 1227241129 - 2³ = 1227241121 is a prime.

It is a super-2 number, since 2×1227241129² = 3012241577418389282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1227241129.

It is not an unprimeable number, because it can be changed into a prime (1227241121) 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, 11577694 + ... + 11577799.

It is an arithmetic number, because the mean of its divisors is an integer number (312599169).

Almost surely, 2^1227241129 is an apocalyptic number.

It is an amenable number.

1227241129 is a deficient number, since it is larger than the sum of its proper divisors (23155547).

1227241129 is an equidigital number, since it uses as much as digits as its factorization.

1227241129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23155546.

The product of its digits is 4032, while the sum is 31.

The square root of 1227241129 is about 35032.0014986298. The cubic root of 1227241129 is about 1070.6395946043.

The spelling of 1227241129 in words is "one billion, two hundred twenty-seven million, two hundred forty-one thousand, one hundred twenty-nine".