1226421228 has 12 divisors (see below), whose sum is σ = 2861649560. Its totient is φ = 408807072.

The previous prime is 1226421227. The next prime is 1226421257. The reversal of 1226421228 is 8221246221.

1226421228 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1226421195 and 1226421204.

It is not an unprimeable number, because it can be changed into a prime (1226421221) 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, 51100873 + ... + 51100896.

Almost surely, 2^1226421228 is an apocalyptic number.

It is an amenable number.

1226421228 is an abundant number, since it is smaller than the sum of its proper divisors (1635228332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226421228 is a wasteful number, since it uses less digits than its factorization.

1226421228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102201776 (or 102201774 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 1226421228 is about 35020.2973716672. The cubic root of 1226421228 is about 1070.4011155172.

Adding to 1226421228 its reverse (8221246221), we get a palindrome (9447667449).

The spelling of 1226421228 in words is "one billion, two hundred twenty-six million, four hundred twenty-one thousand, two hundred twenty-eight".