22211004 has 24 divisors (see below), whose sum is σ = 53498368. Its totient is φ = 7164720.

The previous prime is 22211003. The next prime is 22211009. The reversal of 22211004 is 40011222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 29482 + ... + 30225.

Almost surely, 2^22211004 is an apocalyptic number.

It is an amenable number.

22211004 is an abundant number, since it is smaller than the sum of its proper divisors (31287364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22211004 is a wasteful number, since it uses less digits than its factorization.

22211004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59745 (or 59743 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22211004 is about 4712.8551855537. The cubic root of 22211004 is about 281.0969047288.

Adding to 22211004 its reverse (40011222), we get a palindrome (62222226).

The spelling of 22211004 in words is "twenty-two million, two hundred eleven thousand, four".