1226102551 has 4 divisors (see below), whose sum is σ = 1230529192. Its totient is φ = 1221675912.

The previous prime is 1226102533. The next prime is 1226102557. The reversal of 1226102551 is 1552016221.

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 1226102551 - 2²³ = 1217713943 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 (1226102557) 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, 2212905 + ... + 2213458.

It is an arithmetic number, because the mean of its divisors is an integer number (307632298).

Almost surely, 2^1226102551 is an apocalyptic number.

1226102551 is a deficient number, since it is larger than the sum of its proper divisors (4426641).

1226102551 is an equidigital number, since it uses as much as digits as its factorization.

1226102551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426640.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1226102551 is about 35015.7471860876. The cubic root of 1226102551 is about 1070.3083953984.

Adding to 1226102551 its reverse (1552016221), we get a palindrome (2778118772).

The spelling of 1226102551 in words is "one billion, two hundred twenty-six million, one hundred two thousand, five hundred fifty-one".