211332121 has 32 divisors (see below), whose sum is σ = 288481536. Its totient is φ = 149472000.

The previous prime is 211332109. The next prime is 211332127. The reversal of 211332121 is 121233112.

It is a cyclic number.

It is not a de Polignac number, because 211332121 - 2⁵ = 211332089 is a prime.

It is a super-2 number, since 2×211332121² = 89322530732717282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211332095 and 211332104.

It is not an unprimeable number, because it can be changed into a prime (211332127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59331 + ... + 62791.

It is an arithmetic number, because the mean of its divisors is an integer number (9015048).

Almost surely, 2^211332121 is an apocalyptic number.

It is an amenable number.

211332121 is a deficient number, since it is larger than the sum of its proper divisors (77149415).

211332121 is a wasteful number, since it uses less digits than its factorization.

211332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553.

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

The square root of 211332121 is about 14537.2666275335. The cubic root of 211332121 is about 595.6463761534.

Adding to 211332121 its reverse (121233112), we get a palindrome (332565233).

Subtracting from 211332121 its reverse (121233112), we obtain a palindrome (90099009).

The spelling of 211332121 in words is "two hundred eleven million, three hundred thirty-two thousand, one hundred twenty-one".