211221021132 has 36 divisors (see below), whose sum is σ = 582457968456. Its totient is φ = 64006369920.

The previous prime is 211221021127. The next prime is 211221021161. The reversal of 211221021132 is 231120122112.

211221021132 is a `hidden beast` number, since 211 + 2 + 210 + 211 + 32 = 666.

211221021132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×211221021132² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266692813 + ... + 266693604.

Almost surely, 2^211221021132 is an apocalyptic number.

211221021132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211221021132 is an abundant number, since it is smaller than the sum of its proper divisors (371236947324).

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

211221021132 is a wasteful number, since it uses less digits than its factorization.

211221021132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533386438 (or 533386433 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211221021132 its reverse (231120122112), we get a palindrome (442341143244).

The spelling of 211221021132 in words is "two hundred eleven billion, two hundred twenty-one million, twenty-one thousand, one hundred thirty-two".