21122021010222 has 24 divisors (see below), whose sum is σ = 49924776933720. Its totient is φ = 6400612427280.

The previous prime is 21122021010221. The next prime is 21122021010247. The reversal of 21122021010222 is 22201012022112.

It is a happy number.

21122021010222 is a `hidden beast` number, since 2 + 1 + 1 + 220 + 210 + 10 + 222 = 666.

It is a super-2 number, since 2×21122021010222² (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 junction number, because it is equal to n+sod(n) for n = 21122021010195 and 21122021010204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122021010221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53338436697 + ... + 53338437092.

It is an arithmetic number, because the mean of its divisors is an integer number (2080199038905).

Almost surely, 2^{21122021010222} is an apocalyptic number.

21122021010222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21122021010222 is an abundant number, since it is smaller than the sum of its proper divisors (28802755923498).

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

21122021010222 is a wasteful number, since it uses less digits than its factorization.

21122021010222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106676873808 (or 106676873805 counting only the distinct ones).

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

Adding to 21122021010222 its reverse (22201012022112), we get a palindrome (43323033032334).

The spelling of 21122021010222 in words is "twenty-one trillion, one hundred twenty-two billion, twenty-one million, ten thousand, two hundred twenty-two".