212021102322 has 12 divisors (see below), whose sum is σ = 459379055070. Its totient is φ = 70673700768.

The previous prime is 212021102273. The next prime is 212021102323. The reversal of 212021102322 is 223201120212.

It can be written as a sum of positive squares in only one way, i.e., 193680088281 + 18341014041 = 440091^2 + 135429^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11778950129 = 212021102322 / (2 + 1 + 2 + 0 + 2 + 1 + 1 + 0 + 2 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 212021102295 and 212021102304.

It is not an unprimeable number, because it can be changed into a prime (212021102323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5889475047 + ... + 5889475082.

Almost surely, 2^212021102322 is an apocalyptic number.

212021102322 is an abundant number, since it is smaller than the sum of its proper divisors (247357952748).

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

212021102322 is a wasteful number, since it uses less digits than its factorization.

212021102322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11778950137 (or 11778950134 counting only the distinct ones).

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

Adding to 212021102322 its reverse (223201120212), we get a palindrome (435222222534).

The spelling of 212021102322 in words is "two hundred twelve billion, twenty-one million, one hundred two thousand, three hundred twenty-two".