22001235031 has 4 divisors (see below), whose sum is σ = 22071978864. Its totient is φ = 21930491200.

The previous prime is 22001234989. The next prime is 22001235071. The reversal of 22001235031 is 13053210022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22001235031 - 2⁷ = 22001234903 is a prime.

It is a super-2 number, since 2×22001235031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001235071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35371450 + ... + 35372071.

It is an arithmetic number, because the mean of its divisors is an integer number (5517994716).

Almost surely, 2^22001235031 is an apocalyptic number.

22001235031 is a deficient number, since it is larger than the sum of its proper divisors (70743833).

22001235031 is an equidigital number, since it uses as much as digits as its factorization.

22001235031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70743832.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 22001235031 its reverse (13053210022), we get a palindrome (35054445053).

The spelling of 22001235031 in words is "twenty-two billion, one million, two hundred thirty-five thousand, thirty-one".