20021110022 has 4 divisors (see below), whose sum is σ = 30031665036. Its totient is φ = 10010555010.

The previous prime is 20021109991. The next prime is 20021110033. The reversal of 20021110022 is 22001112002.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20021109985 and 20021110012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005277504 + ... + 5005277507.

It is an arithmetic number, because the mean of its divisors is an integer number (7507916259).

Almost surely, 2^20021110022 is an apocalyptic number.

20021110022 is a deficient number, since it is larger than the sum of its proper divisors (10010555014).

20021110022 is a wasteful number, since it uses less digits than its factorization.

20021110022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010555013.

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

Adding to 20021110022 its reverse (22001112002), we get a palindrome (42022222024).

The spelling of 20021110022 in words is "twenty billion, twenty-one million, one hundred ten thousand, twenty-two".