12212021102020 has 48 divisors (see below), whose sum is σ = 26530844575536. Its totient is φ = 4718481920000.

The previous prime is 12212021102009. The next prime is 12212021102051. The reversal of 12212021102020 is 2020112021221.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 73374890884 + 12138646211136 = 270878^2 + 3484056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12212021101985 and 12212021102003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73643461 + ... + 73809100.

It is an arithmetic number, because the mean of its divisors is an integer number (552725928657).

Almost surely, 2^{12212021102020} is an apocalyptic number.

12212021102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212021102020 is an abundant number, since it is smaller than the sum of its proper divisors (14318823473516).

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

12212021102020 is a wasteful number, since it uses less digits than its factorization.

12212021102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147452712 (or 147452710 counting only the distinct ones).

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

Adding to 12212021102020 its reverse (2020112021221), we get a palindrome (14232133123241).

The spelling of 12212021102020 in words is "twelve trillion, two hundred twelve billion, twenty-one million, one hundred two thousand, twenty".