212021121132 has 48 divisors (see below), whose sum is σ = 555860642400. Its totient is φ = 69879617280.

The previous prime is 212021121131. The next prime is 212021121139. The reversal of 212021121132 is 231121120212.

212021121132 is a `hidden beast` number, since 212 + 0 + 211 + 211 + 32 = 666.

It is a super-2 number, since 2×212021121132² (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 not an unprimeable number, because it can be changed into a prime (212021121131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11019369 + ... + 11038592.

It is an arithmetic number, because the mean of its divisors is an integer number (11580430050).

Almost surely, 2^212021121132 is an apocalyptic number.

It is an amenable number.

212021121132 is an abundant number, since it is smaller than the sum of its proper divisors (343839521268).

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

212021121132 is a wasteful number, since it uses less digits than its factorization.

212021121132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22058063 (or 22058055 counting only the distinct ones).

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

Adding to 212021121132 its reverse (231121120212), we get a palindrome (443142241344).

The spelling of 212021121132 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, one hundred thirty-two".