212121122132 has 18 divisors (see below), whose sum is σ = 388053342138. Its totient is φ = 101449231312.

The previous prime is 212121122123. The next prime is 212121122141. The reversal of 212121122132 is 231221121212.

It is an interprime number because it is at equal distance from previous prime (212121122123) and next prime (212121122141).

It can be written as a sum of positive squares in only one way, i.e., 159094085956 + 53027036176 = 398866^2 + 230276^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50121023 + ... + 50125254.

Almost surely, 2^212121122132 is an apocalyptic number.

It is an amenable number.

212121122132 is a deficient number, since it is larger than the sum of its proper divisors (175932220006).

212121122132 is a wasteful number, since it uses less digits than its factorization.

212121122132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100246327 (or 100246302 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

Adding to 212121122132 its reverse (231221121212), we get a palindrome (443342243344).

The spelling of 212121122132 in words is "two hundred twelve billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred thirty-two".