20022011001 has 24 divisors (see below), whose sum is σ = 31756050144. Its totient is φ = 12562827840.

The previous prime is 20022010997. The next prime is 20022011027. The reversal of 20022011001 is 10011022002.

It is not a de Polignac number, because 20022011001 - 2² = 20022010997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20022011101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2419255 + ... + 2427516.

It is an arithmetic number, because the mean of its divisors is an integer number (1323168756).

Almost surely, 2^20022011001 is an apocalyptic number.

It is an amenable number.

20022011001 is a deficient number, since it is larger than the sum of its proper divisors (11734039143).

20022011001 is an equidigital number, since it uses as much as digits as its factorization.

20022011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4846803 (or 4846791 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20022011001 its reverse (10011022002), we get a palindrome (30033033003).

The spelling of 20022011001 in words is "twenty billion, twenty-two million, eleven thousand, one".