21031011301 has 4 divisors (see below), whose sum is σ = 21191553504. Its totient is φ = 20870469100.

The previous prime is 21031011299. The next prime is 21031011311. The reversal of 21031011301 is 10311013012.

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 21031011301 - 2¹ = 21031011299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031011311) 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, 80270905 + ... + 80271166.

It is an arithmetic number, because the mean of its divisors is an integer number (5297888376).

Almost surely, 2^21031011301 is an apocalyptic number.

It is an amenable number.

21031011301 is a deficient number, since it is larger than the sum of its proper divisors (160542203).

21031011301 is a wasteful number, since it uses less digits than its factorization.

21031011301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160542202.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 21031011301 its reverse (10311013012), we get a palindrome (31342024313).

The spelling of 21031011301 in words is "twenty-one billion, thirty-one million, eleven thousand, three hundred one".