22001029 has 4 divisors (see below), whose sum is σ = 22469184. Its totient is φ = 21532876.

The previous prime is 22000963. The next prime is 22001033. The reversal of 22001029 is 92010022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234007 + ... + 234100.

It is an arithmetic number, because the mean of its divisors is an integer number (5617296).

Almost surely, 2^22001029 is an apocalyptic number.

It is an amenable number.

22001029 is a deficient number, since it is larger than the sum of its proper divisors (468155).

22001029 is an equidigital number, since it uses as much as digits as its factorization.

22001029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468154.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 22001029 is about 4690.5254503094. The cubic root of 22001029 is about 280.2083016315.

The spelling of 22001029 in words is "twenty-two million, one thousand, twenty-nine".