2131212211033 has 4 divisors (see below), whose sum is σ = 2131283784420. Its totient is φ = 2131140637648.

The previous prime is 2131212211027. The next prime is 2131212211061. The reversal of 2131212211033 is 3301122121312.

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 1080285839424 + 1050926371609 = 1039368^2 + 1025147^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131212211033 - 2⁹ = 2131212210521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131212210995 and 2131212211013.

It is not an unprimeable number, because it can be changed into a prime (2131212211013) 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, 35742010 + ... + 35801587.

It is an arithmetic number, because the mean of its divisors is an integer number (532820946105).

Almost surely, 2^{2131212211033} is an apocalyptic number.

It is an amenable number.

2131212211033 is a deficient number, since it is larger than the sum of its proper divisors (71573387).

2131212211033 is an equidigital number, since it uses as much as digits as its factorization.

2131212211033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71573386.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2131212211033 its reverse (3301122121312), we get a palindrome (5432334332345).

The spelling of 2131212211033 in words is "two trillion, one hundred thirty-one billion, two hundred twelve million, two hundred eleven thousand, thirty-three".