1228210151 has 8 divisors (see below), whose sum is σ = 1406131584. Its totient is φ = 1050904440.

The previous prime is 1228210121. The next prime is 1228210163. The reversal of 1228210151 is 1510128221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228210151 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 (1228210121) 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, 149645 + ... + 157638.

It is an arithmetic number, because the mean of its divisors is an integer number (175766448).

Almost surely, 2^1228210151 is an apocalyptic number.

1228210151 is a deficient number, since it is larger than the sum of its proper divisors (177921433).

1228210151 is an equidigital number, since it uses as much as digits as its factorization.

1228210151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307861.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 1228210151 is about 35045.8292953669. The cubic root of 1228210151 is about 1070.9213106028.

Adding to 1228210151 its reverse (1510128221), we get a palindrome (2738338372).

The spelling of 1228210151 in words is "one billion, two hundred twenty-eight million, two hundred ten thousand, one hundred fifty-one".