22001129 has 2 divisors, whose sum is σ = 22001130. Its totient is φ = 22001128.

The previous prime is 22001113. The next prime is 22001137. The reversal of 22001129 is 92110022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21576025 + 425104 = 4645^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 22001129 - 2⁴ = 22001113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22001729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000564 + 11000565.

It is an arithmetic number, because the mean of its divisors is an integer number (11000565).

Almost surely, 2^22001129 is an apocalyptic number.

It is an amenable number.

22001129 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001129 is an equidigital number, since it uses as much as digits as its factorization.

22001129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 22001129 is about 4690.5361100838. The cubic root of 22001129 is about 280.2087261690.

The spelling of 22001129 in words is "twenty-two million, one thousand, one hundred twenty-nine".