121212132 has 24 divisors (see below), whose sum is σ = 283366272. Its totient is φ = 40327200.

The previous prime is 121212131. The next prime is 121212163. The reversal of 121212132 is 231212121.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (121212131) 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, 2844 + ... + 15827.

It is an arithmetic number, because the mean of its divisors is an integer number (11806928).

Almost surely, 2^121212132 is an apocalyptic number.

121212132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121212132 is an abundant number, since it is smaller than the sum of its proper divisors (162154140).

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

121212132 is a wasteful number, since it uses less digits than its factorization.

121212132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19219 (or 19217 counting only the distinct ones).

The product of its digits is 48, while the sum is 15.

The square root of 121212132 is about 11009.6381411925. The cubic root of 121212132 is about 494.8976178419.

Adding to 121212132 its reverse (231212121), we get a palindrome (352424253).

The spelling of 121212132 in words is "one hundred twenty-one million, two hundred twelve thousand, one hundred thirty-two".