122724229 has 2 divisors, whose sum is σ = 122724230. Its totient is φ = 122724228.

The previous prime is 122724223. The next prime is 122724263. The reversal of 122724229 is 922427221.

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., 87890625 + 34833604 = 9375^2 + 5902^2 .

It is an emirp because it is prime and its reverse (922427221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122724229 - 2⁵ = 122724197 is a prime.

It is a super-2 number, since 2×122724229² = 30122472767288882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122724229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122724223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61362114 + 61362115.

It is an arithmetic number, because the mean of its divisors is an integer number (61362115).

Almost surely, 2^122724229 is an apocalyptic number.

It is an amenable number.

122724229 is a deficient number, since it is larger than the sum of its proper divisors (1).

122724229 is an equidigital number, since it uses as much as digits as its factorization.

122724229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 122724229 is about 11078.0968130812. The cubic root of 122724229 is about 496.9470354218.

The spelling of 122724229 in words is "one hundred twenty-two million, seven hundred twenty-four thousand, two hundred twenty-nine".