121332211 has 32 divisors (see below), whose sum is σ = 166053888. Its totient is φ = 85587840.

The previous prime is 121332203. The next prime is 121332217. The reversal of 121332211 is 112233121.

It is not a de Polignac number, because 121332211 - 2³ = 121332203 is a prime.

It is a super-2 number, since 2×121332211² = 29443010852297042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121332217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51910 + ... + 54196.

It is an arithmetic number, because the mean of its divisors is an integer number (5189184).

Almost surely, 2^121332211 is an apocalyptic number.

121332211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121332211 is a deficient number, since it is larger than the sum of its proper divisors (44721677).

121332211 is a wasteful number, since it uses less digits than its factorization.

121332211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371.

The product of its digits is 72, while the sum is 16.

The square root of 121332211 is about 11015.0901494268. The cubic root of 121332211 is about 495.0609876221.

Adding to 121332211 its reverse (112233121), we get a palindrome (233565332).

The spelling of 121332211 in words is "one hundred twenty-one million, three hundred thirty-two thousand, two hundred eleven".