1228210097 has 4 divisors (see below), whose sum is σ = 1281610560. Its totient is φ = 1174809636.

The previous prime is 1228210073. The next prime is 1228210099. The reversal of 1228210097 is 7900128221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7900128221 = 2341 ⋅3374681.

It is a cyclic number.

It is not a de Polignac number, because 1228210097 - 2⁸ = 1228209841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228210099) 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, 26700197 + ... + 26700242.

It is an arithmetic number, because the mean of its divisors is an integer number (320402640).

Almost surely, 2^1228210097 is an apocalyptic number.

It is an amenable number.

1228210097 is a deficient number, since it is larger than the sum of its proper divisors (53400463).

1228210097 is an equidigital number, since it uses as much as digits as its factorization.

1228210097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53400462.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 1228210097 is about 35045.8285249472. The cubic root of 1228210097 is about 1070.9212949080.

The spelling of 1228210097 in words is "one billion, two hundred twenty-eight million, two hundred ten thousand, ninety-seven".