111201229 has 2 divisors, whose sum is σ = 111201230. Its totient is φ = 111201228.

The previous prime is 111201221. The next prime is 111201239. The reversal of 111201229 is 922102111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62173225 + 49028004 = 7885^2 + 7002^2 .

It is a cyclic number.

It is not a de Polignac number, because 111201229 - 2³ = 111201221 is a prime.

It is a super-2 number, since 2×111201229² = 24731426662220882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111201221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55600614 + 55600615.

It is an arithmetic number, because the mean of its divisors is an integer number (55600615).

Almost surely, 2^111201229 is an apocalyptic number.

It is an amenable number.

111201229 is a deficient number, since it is larger than the sum of its proper divisors (1).

111201229 is an equidigital number, since it uses as much as digits as its factorization.

111201229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 111201229 is about 10545.1993342943. The cubic root of 111201229 is about 480.8797941329.

The spelling of 111201229 in words is "one hundred eleven million, two hundred one thousand, two hundred twenty-nine".