22211001 has 12 divisors (see below), whose sum is σ = 32535360. Its totient is φ = 14598360.

The previous prime is 22210999. The next prime is 22211003. The reversal of 22211001 is 10011222.

It is an interprime number because it is at equal distance from previous prime (22210999) and next prime (22211003).

It is not a de Polignac number, because 22211001 - 2¹ = 22210999 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 (22211003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16741 + ... + 18018.

It is an arithmetic number, because the mean of its divisors is an integer number (2711280).

Almost surely, 2^22211001 is an apocalyptic number.

It is an amenable number.

22211001 is a deficient number, since it is larger than the sum of its proper divisors (10324359).

22211001 is a wasteful number, since it uses less digits than its factorization.

22211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34836 (or 34833 counting only the distinct ones).

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

The square root of 22211001 is about 4712.8548672752. The cubic root of 22211001 is about 281.0968920731.

Adding to 22211001 its reverse (10011222), we get a palindrome (32222223).

The spelling of 22211001 in words is "twenty-two million, two hundred eleven thousand, one".