20100022 has 8 divisors (see below), whose sum is σ = 31460976. Its totient is φ = 9613032.

The previous prime is 20099983. The next prime is 20100023. The reversal of 20100022 is 22000102.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20099978 and 20100014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100023) 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, 218433 + ... + 218524.

It is an arithmetic number, because the mean of its divisors is an integer number (3932622).

Almost surely, 2^20100022 is an apocalyptic number.

20100022 is a deficient number, since it is larger than the sum of its proper divisors (11360954).

20100022 is a wasteful number, since it uses less digits than its factorization.

20100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436982.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 20100022 is about 4483.3048078399. The cubic root of 20100022 is about 271.8935118764.

Adding to 20100022 its reverse (22000102), we get a palindrome (42100124).

The spelling of 20100022 in words is "twenty million, one hundred thousand, twenty-two".