22111002002 has 8 divisors (see below), whose sum is σ = 33199376700. Its totient is φ = 11044543104.

The previous prime is 22111001981. The next prime is 22111002019. The reversal of 22111002002 is 20020011122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20831437561 + 1279564441 = 144331^2 + 35771^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5476427 + ... + 5480462.

Almost surely, 2^22111002002 is an apocalyptic number.

22111002002 is a deficient number, since it is larger than the sum of its proper divisors (11088374698).

22111002002 is a wasteful number, since it uses less digits than its factorization.

22111002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10957900.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22111002002 its reverse (20020011122), we get a palindrome (42131013124).

The spelling of 22111002002 in words is "twenty-two billion, one hundred eleven million, two thousand, two".