151213212 has 36 divisors (see below), whose sum is σ = 384778576. Its totient is φ = 50068800.

The previous prime is 151213159. The next prime is 151213243. The reversal of 151213212 is 212312151.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 8473 + ... + 19344.

Almost surely, 2^151213212 is an apocalyptic number.

151213212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

151213212 is an abundant number, since it is smaller than the sum of its proper divisors (233565364).

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

151213212 is a wasteful number, since it uses less digits than its factorization.

151213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27978 (or 27973 counting only the distinct ones).

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

The square root of 151213212 is about 12296.8781404062. The cubic root of 151213212 is about 532.7579177731.

Adding to 151213212 its reverse (212312151), we get a palindrome (363525363).

The spelling of 151213212 in words is "one hundred fifty-one million, two hundred thirteen thousand, two hundred twelve".