21020210301 has 16 divisors (see below), whose sum is σ = 29319214464. Its totient is φ = 13370410944.

The previous prime is 21020210291. The next prime is 21020210317. The reversal of 21020210301 is 10301202012.

It is not a de Polignac number, because 21020210301 - 2¹⁹ = 21019686013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020210381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356286 + ... + 411071.

It is an arithmetic number, because the mean of its divisors is an integer number (1832450904).

Almost surely, 2^21020210301 is an apocalyptic number.

It is an amenable number.

21020210301 is a deficient number, since it is larger than the sum of its proper divisors (8299004163).

21020210301 is a wasteful number, since it uses less digits than its factorization.

21020210301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767780.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21020210301 its reverse (10301202012), we get a palindrome (31321412313).

The spelling of 21020210301 in words is "twenty-one billion, twenty million, two hundred ten thousand, three hundred one".