22211010 has 80 divisors (see below), whose sum is σ = 63275256. Its totient is φ = 5571072.

The previous prime is 22211009. The next prime is 22211041. The reversal of 22211010 is 1011222.

It can be written as a sum of positive squares in 4 ways, for example, as 20820969 + 1390041 = 4563^2 + 1179^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22210983 and 22211001.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12964 + ... + 14576.

Almost surely, 2^22211010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22211010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31637628).

22211010 is an abundant number, since it is smaller than the sum of its proper divisors (41064246).

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

22211010 is a wasteful number, since it uses less digits than its factorization.

22211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1640 counting only the distinct ones).

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

The square root of 22211010 is about 4712.8558221104. The cubic root of 22211010 is about 281.0969300403.

Adding to 22211010 its reverse (1011222), we get a palindrome (23222232).

The spelling of 22211010 in words is "twenty-two million, two hundred eleven thousand, ten".