211212012133 has 4 divisors (see below), whose sum is σ = 211213462828. Its totient is φ = 211210561440.

The previous prime is 211212012107. The next prime is 211212012169. The reversal of 211212012133 is 331210212112.

211212012133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 158099278689 + 53112733444 = 397617^2 + 230462^2 .

It is a cyclic number.

It is not a de Polignac number, because 211212012133 - 2¹³ = 211212003941 is a prime.

It is a super-2 number, since 2×211212012133² (a number of 23 digits) contains 22 as substring.

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 211212012133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212012533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479088 + ... + 807433.

It is an arithmetic number, because the mean of its divisors is an integer number (52803365707).

Almost surely, 2^211212012133 is an apocalyptic number.

It is an amenable number.

211212012133 is a deficient number, since it is larger than the sum of its proper divisors (1450695).

211212012133 is a wasteful number, since it uses less digits than its factorization.

211212012133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450694.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211212012133 its reverse (331210212112), we get a palindrome (542422224245).

The spelling of 211212012133 in words is "two hundred eleven billion, two hundred twelve million, twelve thousand, one hundred thirty-three".