11223212151 has 4 divisors (see below), whose sum is σ = 14964282872. Its totient is φ = 7482141432.

The previous prime is 11223212129. The next prime is 11223212153. The reversal of 11223212151 is 15121232211.

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

It is not a de Polignac number, because 11223212151 - 2²¹ = 11221114999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223212153) 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, 1870535356 + ... + 1870535361.

It is an arithmetic number, because the mean of its divisors is an integer number (3741070718).

Almost surely, 2^11223212151 is an apocalyptic number.

11223212151 is a deficient number, since it is larger than the sum of its proper divisors (3741070721).

11223212151 is an equidigital number, since it uses as much as digits as its factorization.

11223212151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3741070720.

The product of its digits is 240, while the sum is 21.

Adding to 11223212151 its reverse (15121232211), we get a palindrome (26344444362).

The spelling of 11223212151 in words is "eleven billion, two hundred twenty-three million, two hundred twelve thousand, one hundred fifty-one".