21020022022311 has 48 divisors (see below), whose sum is σ = 33568346972160. Its totient is φ = 12593892651840.

The previous prime is 21020022022277. The next prime is 21020022022361. The reversal of 21020022022311 is 11322022002012.

21020022022311 is a `hidden beast` number, since 2 + 10 + 200 + 220 + 2 + 231 + 1 = 666.

It is not a de Polignac number, because 21020022022311 - 2⁷ = 21020022022183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020022022361) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8956281 + ... + 11056898.

It is an arithmetic number, because the mean of its divisors is an integer number (699340561920).

Almost surely, 2^{21020022022311} is an apocalyptic number.

21020022022311 is a deficient number, since it is larger than the sum of its proper divisors (12548324949849).

21020022022311 is a wasteful number, since it uses less digits than its factorization.

21020022022311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20013436 (or 20013433 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21020022022311 its reverse (11322022002012), we get a palindrome (32342044024323).

The spelling of 21020022022311 in words is "twenty-one trillion, twenty billion, twenty-two million, twenty-two thousand, three hundred eleven".