12212101022020 has 24 divisors (see below), whose sum is σ = 25647394407768. Its totient is φ = 4884462835200.

The previous prime is 12212101021987. The next prime is 12212101022021. The reversal of 12212101022020 is 2022010121221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5764147946496 + 6447953075524 = 2400864^2 + 2539282^2 .

It is a super-2 number, since 2×12212101022020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12212101021985 and 12212101022003.

It is not an unprimeable number, because it can be changed into a prime (12212101022021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23333061 + ... + 23850700.

It is an arithmetic number, because the mean of its divisors is an integer number (1068641433657).

Almost surely, 2^{12212101022020} is an apocalyptic number.

12212101022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212101022020 is an abundant number, since it is smaller than the sum of its proper divisors (13435293385748).

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

12212101022020 is a wasteful number, since it uses less digits than its factorization.

12212101022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47196711 (or 47196709 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12212101022020 its reverse (2022010121221), we get a palindrome (14234111143241).

The spelling of 12212101022020 in words is "twelve trillion, two hundred twelve billion, one hundred one million, twenty-two thousand, twenty".