21122020221102 has 28 divisors (see below), whose sum is σ = 47502815027280. Its totient is φ = 7040673406548.

The previous prime is 21122020221079. The next prime is 21122020221139. The reversal of 21122020221102 is 20112202022112.

It is a happy number.

21122020221102 is a `hidden beast` number, since 211 + 220 + 2 + 0 + 221 + 10 + 2 = 666.

It is a super-2 number, since 2×21122020221102² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7243489702 + ... + 7243492617.

Almost surely, 2^{21122020221102} is an apocalyptic number.

21122020221102 is an abundant number, since it is smaller than the sum of its proper divisors (26380794806178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21122020221102 is an equidigital number, since it uses as much as digits as its factorization.

21122020221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14486982339 (or 14486982324 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21122020221102 its reverse (20112202022112), we get a palindrome (41234222243214).

It can be divided in two parts, 2112202022110 and 2, that added together give a palindrome (2112202022112).

The spelling of 21122020221102 in words is "twenty-one trillion, one hundred twenty-two billion, twenty million, two hundred twenty-one thousand, one hundred two".