22211151 has 4 divisors (see below), whose sum is σ = 29614872. Its totient is φ = 14807432.

The previous prime is 22211141. The next prime is 22211153. The reversal of 22211151 is 15111222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22211151 - 2¹³ = 22202959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22211151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3701856 + ... + 3701861.

It is an arithmetic number, because the mean of its divisors is an integer number (7403718).

Almost surely, 2^22211151 is an apocalyptic number.

22211151 is a deficient number, since it is larger than the sum of its proper divisors (7403721).

22211151 is an equidigital number, since it uses as much as digits as its factorization.

22211151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403720.

The product of its digits is 40, while the sum is 15.

The square root of 22211151 is about 4712.8707811694. The cubic root of 22211151 is about 281.0975248592.

Adding to 22211151 its reverse (15111222), we get a palindrome (37322373).

The spelling of 22211151 in words is "twenty-two million, two hundred eleven thousand, one hundred fifty-one".