211221032 has 32 divisors (see below), whose sum is σ = 433123200. Its totient is φ = 95769600.

The previous prime is 211221013. The next prime is 211221037. The reversal of 211221032 is 230122112.

It is a happy number.

211221032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211221032² = 89228648718290048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211220998 and 211221016.

It is not an unprimeable number, because it can be changed into a prime (211221037) 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, 35144 + ... + 40712.

It is an arithmetic number, because the mean of its divisors is an integer number (13535100).

Almost surely, 2^211221032 is an apocalyptic number.

211221032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211221032 is an abundant number, since it is smaller than the sum of its proper divisors (221902168).

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

211221032 is a wasteful number, since it uses less digits than its factorization.

211221032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6017 (or 6013 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 211221032 is about 14533.4452900887. The cubic root of 211221032 is about 595.5419885547.

Adding to 211221032 its reverse (230122112), we get a palindrome (441343144).

The spelling of 211221032 in words is "two hundred eleven million, two hundred twenty-one thousand, thirty-two".