1222134154 has 4 divisors (see below), whose sum is σ = 1833201234. Its totient is φ = 611067076.

The previous prime is 1222134149. The next prime is 1222134157. The reversal of 1222134154 is 4514312221.

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

It can be written as a sum of positive squares in only one way, i.e., 900900225 + 321233929 = 30015^2 + 17923^2 .

It is a super-2 number, since 2×1222134154² = 2987223780746591432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222134157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305533537 + ... + 305533540.

Almost surely, 2^1222134154 is an apocalyptic number.

1222134154 is a deficient number, since it is larger than the sum of its proper divisors (611067080).

1222134154 is an equidigital number, since it uses as much as digits as its factorization.

1222134154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611067079.

The product of its digits is 1920, while the sum is 25.

The square root of 1222134154 is about 34959.0353699870. The cubic root of 1222134154 is about 1069.1524292139.

Adding to 1222134154 its reverse (4514312221), we get a palindrome (5736446375).

The spelling of 1222134154 in words is "one billion, two hundred twenty-two million, one hundred thirty-four thousand, one hundred fifty-four".