212001130301021 has 4 divisors (see below), whose sum is σ = 213405111296544. Its totient is φ = 210597149305500.

The previous prime is 212001130300997. The next prime is 212001130301027. The reversal of 212001130301021 is 120103031100212.

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 212001130301021 - 2¹⁰ = 212001130299997 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 (212001130301027) 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, 701990497535 + ... + 701990497836.

It is an arithmetic number, because the mean of its divisors is an integer number (53351277824136).

Almost surely, 2^{212001130301021} is an apocalyptic number.

It is an amenable number.

212001130301021 is a deficient number, since it is larger than the sum of its proper divisors (1403980995523).

212001130301021 is a wasteful number, since it uses less digits than its factorization.

212001130301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403980995522.

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

Adding to 212001130301021 its reverse (120103031100212), we get a palindrome (332104161401233).

The spelling of 212001130301021 in words is "two hundred twelve trillion, one billion, one hundred thirty million, three hundred one thousand, twenty-one".