121633212 has 48 divisors (see below), whose sum is σ = 308403200. Its totient is φ = 37169280.

The previous prime is 121633159. The next prime is 121633229. The reversal of 121633212 is 212336121.

It is a super-2 number, since 2×121633212² = 29589276522873888, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1537 + ... + 15672.

Almost surely, 2^121633212 is an apocalyptic number.

121633212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121633212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154201600).

121633212 is an abundant number, since it is smaller than the sum of its proper divisors (186769988).

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

121633212 is a wasteful number, since it uses less digits than its factorization.

121633212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17266 (or 17264 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 121633212 is about 11028.7448061871. The cubic root of 121633212 is about 495.4700320578.

Adding to 121633212 its reverse (212336121), we get a palindrome (333969333).

The spelling of 121633212 in words is "one hundred twenty-one million, six hundred thirty-three thousand, two hundred twelve".