212021012333 has 4 divisors (see below), whose sum is σ = 228330320988. Its totient is φ = 195711703680.

The previous prime is 212021012279. The next prime is 212021012351. The reversal of 212021012333 is 333210120212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15096299689 + 196924712644 = 122867^2 + 443762^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021012333 - 2³⁴ = 194841143149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021012353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8154654308 + ... + 8154654333.

It is an arithmetic number, because the mean of its divisors is an integer number (57082580247).

Almost surely, 2^212021012333 is an apocalyptic number.

It is an amenable number.

212021012333 is a deficient number, since it is larger than the sum of its proper divisors (16309308655).

212021012333 is a wasteful number, since it uses less digits than its factorization.

212021012333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16309308654.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212021012333 its reverse (333210120212), we get a palindrome (545231132545).

The spelling of 212021012333 in words is "two hundred twelve billion, twenty-one million, twelve thousand, three hundred thirty-three".