1229151 has 32 divisors (see below), whose sum is σ = 2170368. Its totient is φ = 599040.

The previous prime is 1229149. The next prime is 1229159. The reversal of 1229151 is 1519221.

It is not a de Polignac number, because 1229151 - 2¹ = 1229149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

1229151 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3771 + ... + 4083.

It is an arithmetic number, because the mean of its divisors is an integer number (67824).

2^1229151 is an apocalyptic number.

1229151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1229151 is a deficient number, since it is larger than the sum of its proper divisors (941217).

1229151 is a wasteful number, since it uses less digits than its factorization.

1229151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its digits is 180, while the sum is 21.

The square root of 1229151 is about 1108.6708258090. The cubic root of 1229151 is about 107.1194694349.

The spelling of 1229151 in words is "one million, two hundred twenty-nine thousand, one hundred fifty-one".