212021021033 has 4 divisors (see below), whose sum is σ = 223180022160. Its totient is φ = 200862019908.

The previous prime is 212021021011. The next prime is 212021021041. The reversal of 212021021033 is 330120120212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212021021033 - 2¹⁴ = 212021004649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021021053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5579500535 + ... + 5579500572.

It is an arithmetic number, because the mean of its divisors is an integer number (55795005540).

Almost surely, 2^212021021033 is an apocalyptic number.

It is an amenable number.

212021021033 is a deficient number, since it is larger than the sum of its proper divisors (11159001127).

212021021033 is a wasteful number, since it uses less digits than its factorization.

212021021033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11159001126.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212021021033 its reverse (330120120212), we get a palindrome (542141141245).

The spelling of 212021021033 in words is "two hundred twelve billion, twenty-one million, twenty-one thousand, thirty-three".