212021131103 has 4 divisors (see below), whose sum is σ = 212022507240. Its totient is φ = 212019754968.

The previous prime is 212021131033. The next prime is 212021131151. The reversal of 212021131103 is 301131120212.

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 212021131103 - 2⁸ = 212021130847 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 (212021131163) 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, 422900 + ... + 776457.

It is an arithmetic number, because the mean of its divisors is an integer number (53005626810).

Almost surely, 2^212021131103 is an apocalyptic number.

212021131103 is a deficient number, since it is larger than the sum of its proper divisors (1376137).

212021131103 is a wasteful number, since it uses less digits than its factorization.

212021131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376136.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 212021131103 its reverse (301131120212), we get a palindrome (513152251315).

The spelling of 212021131103 in words is "two hundred twelve billion, twenty-one million, one hundred thirty-one thousand, one hundred three".