22211012 has 12 divisors (see below), whose sum is σ = 39817596. Its totient is φ = 10834560.

The previous prime is 22211009. The next prime is 22211041. The reversal of 22211012 is 21011222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13366336 + 8844676 = 3656^2 + 2974^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22210984 and 22211002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67553 + ... + 67880.

It is an arithmetic number, because the mean of its divisors is an integer number (3318133).

Almost surely, 2^22211012 is an apocalyptic number.

It is an amenable number.

22211012 is a deficient number, since it is larger than the sum of its proper divisors (17606584).

22211012 is a wasteful number, since it uses less digits than its factorization.

22211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135478 (or 135476 counting only the distinct ones).

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

The square root of 22211012 is about 4712.8560342960. The cubic root of 22211012 is about 281.0969384775.

Adding to 22211012 its reverse (21011222), we get a palindrome (43222234).

The spelling of 22211012 in words is "twenty-two million, two hundred eleven thousand, twelve".