21011122201022 has 16 divisors (see below), whose sum is σ = 33445934554032. Its totient is φ = 9865267301760.

The previous prime is 21011122201009. The next prime is 21011122201033. The reversal of 21011122201022 is 22010222111012.

It is a super-2 number, since 2×21011122201022² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697472729 + ... + 697502852.

It is an arithmetic number, because the mean of its divisors is an integer number (2090370909627).

Almost surely, 2^{21011122201022} is an apocalyptic number.

21011122201022 is a deficient number, since it is larger than the sum of its proper divisors (12434812353010).

21011122201022 is a wasteful number, since it uses less digits than its factorization.

21011122201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394976043.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21011122201022 its reverse (22010222111012), we get a palindrome (43021344312034).

The spelling of 21011122201022 in words is "twenty-one trillion, eleven billion, one hundred twenty-two million, two hundred one thousand, twenty-two".