1011201229 has 2 divisors, whose sum is σ = 1011201230. Its totient is φ = 1011201228.

The previous prime is 1011201227. The next prime is 1011201239. The reversal of 1011201229 is 9221021101.

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., 984265129 + 26936100 = 31373^2 + 5190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011201229 - 2¹ = 1011201227 is a prime.

It is a super-2 number, since 2×1011201229² = 2045055851062220882, which contains 22 as substring.

Together with 1011201227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011201227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505600614 + 505600615.

It is an arithmetic number, because the mean of its divisors is an integer number (505600615).

Almost surely, 2^1011201229 is an apocalyptic number.

It is an amenable number.

1011201229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011201229 is an equidigital number, since it uses as much as digits as its factorization.

1011201229 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 1011201229 is about 31799.3903872386. The cubic root of 1011201229 is about 1003.7198882732.

The spelling of 1011201229 in words is "one billion, eleven million, two hundred one thousand, two hundred twenty-nine".