12220029 has 6 divisors (see below), whose sum is σ = 17651166. Its totient is φ = 8146680.

The previous prime is 12220003. The next prime is 12220031. The reversal of 12220029 is 92002221.

It can be written as a sum of positive squares in only one way, i.e., 7371225 + 4848804 = 2715^2 + 2202^2 .

It is not a de Polignac number, because 12220029 - 2⁵ = 12219997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12219993 and 12220020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678882 + ... + 678899.

It is an arithmetic number, because the mean of its divisors is an integer number (2941861).

Almost surely, 2^12220029 is an apocalyptic number.

It is an amenable number.

12220029 is a deficient number, since it is larger than the sum of its proper divisors (5431137).

12220029 is a wasteful number, since it uses less digits than its factorization.

12220029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357787 (or 1357784 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12220029 is about 3495.7158065266. The cubic root of 12220029 is about 230.3336619091. Note that the first 3 decimals are identical.

The spelling of 12220029 in words is "twelve million, two hundred twenty thousand, twenty-nine".