20022112001 has 4 divisors (see below), whose sum is σ = 20448114432. Its totient is φ = 19596109572.

The previous prime is 20022111997. The next prime is 20022112003. The reversal of 20022112001 is 10021122002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10021122002 = 2 ⋅5010561001.

It is a cyclic number.

It is not a de Polignac number, because 20022112001 - 2² = 20022111997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20022112003) 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, 213001145 + ... + 213001238.

It is an arithmetic number, because the mean of its divisors is an integer number (5112028608).

Almost surely, 2^20022112001 is an apocalyptic number.

It is an amenable number.

20022112001 is a deficient number, since it is larger than the sum of its proper divisors (426002431).

20022112001 is an equidigital number, since it uses as much as digits as its factorization.

20022112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426002430.

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

Adding to 20022112001 its reverse (10021122002), we get a palindrome (30043234003).

The spelling of 20022112001 in words is "twenty billion, twenty-two million, one hundred twelve thousand, one".