212101022212020 has 120 divisors (see below), whose sum is σ = 665533112013000. Its totient is φ = 56546301892608.

The previous prime is 212101022212019. The next prime is 212101022212063. The reversal of 212101022212020 is 20212220101212.

It is a happy number.

212101022212020 is a `hidden beast` number, since 21 + 210 + 10 + 2 + 221 + 202 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 37747114001424 + 174353908210596 = 6143868^2 + 13204314^2 .

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 = 212101022211984 and 212101022212002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9608385 + ... + 22727144.

It is an arithmetic number, because the mean of its divisors is an integer number (5546109266775).

Almost surely, 2^{212101022212020} is an apocalyptic number.

212101022212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101022212020 is an abundant number, since it is smaller than the sum of its proper divisors (453432089800980).

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

212101022212020 is a wasteful number, since it uses less digits than its factorization.

212101022212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32339599 (or 32339588 counting only the distinct ones).

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

Adding to 212101022212020 its reverse (20212220101212), we get a palindrome (232313242313232).

The spelling of 212101022212020 in words is "two hundred twelve trillion, one hundred one billion, twenty-two million, two hundred twelve thousand, twenty".