61121229 has 16 divisors (see below), whose sum is σ = 87964800. Its totient is φ = 37526976.

The previous prime is 61121209. The next prime is 61121279. The reversal of 61121229 is 92212116.

61121229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61121229 - 2⁷ = 61121101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61121199 and 61121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61121209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18312 + ... + 21390.

It is an arithmetic number, because the mean of its divisors is an integer number (5497800).

Almost surely, 2^61121229 is an apocalyptic number.

It is an amenable number.

61121229 is a deficient number, since it is larger than the sum of its proper divisors (26843571).

61121229 is a wasteful number, since it uses less digits than its factorization.

61121229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604.

The product of its digits is 432, while the sum is 24.

The square root of 61121229 is about 7818.0067152696. The cubic root of 61121229 is about 393.9103204037.

The spelling of 61121229 in words is "sixty-one million, one hundred twenty-one thousand, two hundred twenty-nine".