212132202021 has 16 divisors (see below), whose sum is σ = 314288096320. Its totient is φ = 141413292720.

The previous prime is 212132201977. The next prime is 212132202043. The reversal of 212132202021 is 120202231212.

It is not a de Polignac number, because 212132202021 - 2¹⁰ = 212132200997 is a prime.

It is a super-2 number, since 2×212132202021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212132201985 and 212132202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212132202071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268266 + ... + 704436.

It is an arithmetic number, because the mean of its divisors is an integer number (19643006020).

Almost surely, 2^212132202021 is an apocalyptic number.

It is an amenable number.

212132202021 is a deficient number, since it is larger than the sum of its proper divisors (102155894299).

212132202021 is a wasteful number, since it uses less digits than its factorization.

212132202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454193 (or 454187 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212132202021 its reverse (120202231212), we get a palindrome (332334433233).

The spelling of 212132202021 in words is "two hundred twelve billion, one hundred thirty-two million, two hundred two thousand, twenty-one".