22161929 has 2 divisors, whose sum is σ = 22161930. Its totient is φ = 22161928.

The previous prime is 22161917. The next prime is 22161941. The reversal of 22161929 is 92916122.

It is a balanced prime because it is at equal distance from previous prime (22161917) and next prime (22161941).

It can be written as a sum of positive squares in only one way, i.e., 18939904 + 3222025 = 4352^2 + 1795^2 .

It is a cyclic number.

It is not a de Polignac number, because 22161929 - 2²⁴ = 5384713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22161895 and 22161904.

It is not a weakly prime, because it can be changed into another prime (22161229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11080964 + 11080965.

It is an arithmetic number, because the mean of its divisors is an integer number (11080965).

Almost surely, 2^22161929 is an apocalyptic number.

It is an amenable number.

22161929 is a deficient number, since it is larger than the sum of its proper divisors (1).

22161929 is an equidigital number, since it uses as much as digits as its factorization.

22161929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 32.

The square root of 22161929 is about 4707.6458023093. The cubic root of 22161929 is about 280.8897250963.

The spelling of 22161929 in words is "twenty-two million, one hundred sixty-one thousand, nine hundred twenty-nine".