151211223 has 24 divisors (see below), whose sum is σ = 230076288. Its totient is φ = 95509392.

The previous prime is 151211189. The next prime is 151211257. The reversal of 151211223 is 322112151.

It is an interprime number because it is at equal distance from previous prime (151211189) and next prime (151211257).

It is not a de Polignac number, because 151211223 - 2⁸ = 151210967 is a prime.

It is a super-2 number, since 2×151211223² = 45729667922311458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 151211196 and 151211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151219223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18736 + ... + 25562.

It is an arithmetic number, because the mean of its divisors is an integer number (9586512).

Almost surely, 2^151211223 is an apocalyptic number.

151211223 is a deficient number, since it is larger than the sum of its proper divisors (78865065).

151211223 is a wasteful number, since it uses less digits than its factorization.

151211223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963 (or 6960 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 151211223 is about 12296.7972659551. The cubic root of 151211223 is about 532.7555818658.

Adding to 151211223 its reverse (322112151), we get a palindrome (473323374).

The spelling of 151211223 in words is "one hundred fifty-one million, two hundred eleven thousand, two hundred twenty-three".