20001021022 has 8 divisors (see below), whose sum is σ = 30113062200. Its totient is φ = 9963333624.

The previous prime is 20001021013. The next prime is 20001021097. The reversal of 20001021022 is 22012010002.

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

It is a congruent number.

It is an unprimeable number.

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, 18587772 + ... + 18588847.

It is an arithmetic number, because the mean of its divisors is an integer number (3764132775).

Almost surely, 2^20001021022 is an apocalyptic number.

20001021022 is a deficient number, since it is larger than the sum of its proper divisors (10112041178).

20001021022 is a wasteful number, since it uses less digits than its factorization.

20001021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37176890.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20001021022 its reverse (22012010002), we get a palindrome (42013031024).

The spelling of 20001021022 in words is "twenty billion, one million, twenty-one thousand, twenty-two".