21021011301 has 16 divisors (see below), whose sum is σ = 28247095296. Its totient is φ = 13904848896.

The previous prime is 21021011281. The next prime is 21021011339. The reversal of 21021011301 is 10311012012.

It is not a de Polignac number, because 21021011301 - 2⁵ = 21021011269 is a prime.

It is a super-2 number, since 2×21021011301² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021011381) 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 15 ways as a sum of consecutive naturals, for example, 174361 + ... + 269153.

It is an arithmetic number, because the mean of its divisors is an integer number (1765443456).

Almost surely, 2^21021011301 is an apocalyptic number.

It is an amenable number.

21021011301 is a deficient number, since it is larger than the sum of its proper divisors (7226083995).

21021011301 is a wasteful number, since it uses less digits than its factorization.

21021011301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95372.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21021011301 its reverse (10311012012), we get a palindrome (31332023313).

The spelling of 21021011301 in words is "twenty-one billion, twenty-one million, eleven thousand, three hundred one".