1222154254 has 16 divisors (see below), whose sum is σ = 1884184128. Its totient is φ = 594258912.

The previous prime is 1222154251. The next prime is 1222154257. The reversal of 1222154254 is 4524512221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1222154251) and next prime (1222154257).

It is a super-2 number, since 2×1222154254² = 2987322041140593032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222154251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26649 + ... + 56164.

It is an arithmetic number, because the mean of its divisors is an integer number (117761508).

Almost surely, 2^1222154254 is an apocalyptic number.

1222154254 is a deficient number, since it is larger than the sum of its proper divisors (662029874).

1222154254 is a wasteful number, since it uses less digits than its factorization.

1222154254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83019.

The product of its digits is 6400, while the sum is 28.

The square root of 1222154254 is about 34959.3228481331. The cubic root of 1222154254 is about 1069.1582905034.

Adding to 1222154254 its reverse (4524512221), we get a palindrome (5746666475).

The spelling of 1222154254 in words is "one billion, two hundred twenty-two million, one hundred fifty-four thousand, two hundred fifty-four".