212322102021 has 12 divisors (see below), whose sum is σ = 324727920972. Its totient is φ = 133221710976.

The previous prime is 212322101983. The next prime is 212322102049. The reversal of 212322102021 is 120201223212.

212322102021 is a `hidden beast` number, since 21 + 232 + 210 + 202 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 148760633025 + 63561468996 = 385695^2 + 252114^2 .

It is not a de Polignac number, because 212322102021 - 2³¹ = 210174618373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212322101985 and 212322102003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212322102061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 693862926 + ... + 693863231.

It is an arithmetic number, because the mean of its divisors is an integer number (27060660081).

Almost surely, 2^212322102021 is an apocalyptic number.

It is an amenable number.

212322102021 is a deficient number, since it is larger than the sum of its proper divisors (112405818951).

212322102021 is a wasteful number, since it uses less digits than its factorization.

212322102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387726180 (or 1387726177 counting only the distinct ones).

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

Adding to 212322102021 its reverse (120201223212), we get a palindrome (332523325233).

The spelling of 212322102021 in words is "two hundred twelve billion, three hundred twenty-two million, one hundred two thousand, twenty-one".