121201229 has 2 divisors, whose sum is σ = 121201230. Its totient is φ = 121201228.

The previous prime is 121201217. The next prime is 121201231. The reversal of 121201229 is 922102121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121110025 + 91204 = 11005^2 + 302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201229 is a prime.

It is a super-2 number, since 2×121201229² = 29379475822220882, which contains 22 as substring.

Together with 121201231, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121201229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121209229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600614 + 60600615.

It is an arithmetic number, because the mean of its divisors is an integer number (60600615).

Almost surely, 2^121201229 is an apocalyptic number.

It is an amenable number.

121201229 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201229 is an equidigital number, since it uses as much as digits as its factorization.

121201229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 121201229 is about 11009.1429730020. The cubic root of 121201229 is about 494.8827787593.

The spelling of 121201229 in words is "one hundred twenty-one million, two hundred one thousand, two hundred twenty-nine".