21010302111 has 64 divisors (see below), whose sum is σ = 30625689600. Its totient is φ = 12782085120.

The previous prime is 21010302097. The next prime is 21010302143. The reversal of 21010302111 is 11120301012.

It is not a de Polignac number, because 21010302111 - 2²² = 21006107807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010302151) 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 63 ways as a sum of consecutive naturals, for example, 22046011 + ... + 22046963.

It is an arithmetic number, because the mean of its divisors is an integer number (478526400).

Almost surely, 2^21010302111 is an apocalyptic number.

21010302111 is a deficient number, since it is larger than the sum of its proper divisors (9615387489).

21010302111 is a wasteful number, since it uses less digits than its factorization.

21010302111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

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

Adding to 21010302111 its reverse (11120301012), we get a palindrome (32130603123).

The spelling of 21010302111 in words is "twenty-one billion, ten million, three hundred two thousand, one hundred eleven".