212333021011 has 4 divisors (see below), whose sum is σ = 217511875224. Its totient is φ = 207154166800.

The previous prime is 212333020987. The next prime is 212333021057. The reversal of 212333021011 is 110120333212.

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

It is a cyclic number.

It is not a de Polignac number, because 212333021011 - 2²⁵ = 212299466579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212333021011.

It is not an unprimeable number, because it can be changed into a prime (212333021081) 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, 2589427045 + ... + 2589427126.

It is an arithmetic number, because the mean of its divisors is an integer number (54377968806).

Almost surely, 2^212333021011 is an apocalyptic number.

212333021011 is a deficient number, since it is larger than the sum of its proper divisors (5178854213).

212333021011 is an equidigital number, since it uses as much as digits as its factorization.

212333021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178854212.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 212333021011 its reverse (110120333212), we get a palindrome (322453354223).

The spelling of 212333021011 in words is "two hundred twelve billion, three hundred thirty-three million, twenty-one thousand, eleven".