22011002001 has 48 divisors (see below), whose sum is σ = 34369171200. Its totient is φ = 13532593536.

The previous prime is 22011001973. The next prime is 22011002009. The reversal of 22011002001 is 10020011022.

It is not a de Polignac number, because 22011002001 - 2⁹ = 22011001489 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (22011002009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4974276 + ... + 4978698.

It is an arithmetic number, because the mean of its divisors is an integer number (716024400).

Almost surely, 2^22011002001 is an apocalyptic number.

It is an amenable number.

22011002001 is a deficient number, since it is larger than the sum of its proper divisors (12358169199).

22011002001 is a wasteful number, since it uses less digits than its factorization.

22011002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5310 (or 5307 counting only the distinct ones).

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

Adding to 22011002001 its reverse (10020011022), we get a palindrome (32031013023).

The spelling of 22011002001 in words is "twenty-two billion, eleven million, two thousand, one".