212201120120020 has 12 divisors (see below), whose sum is σ = 445622352252084. Its totient is φ = 84880448048000.

The previous prime is 212201120119999. The next prime is 212201120120063. The reversal of 212201120120020 is 20021021102212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 129239881930384 + 82961238189636 = 11368372^2 + 9108306^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212201120119976 and 212201120120003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5305028002981 + ... + 5305028003020.

It is an arithmetic number, because the mean of its divisors is an integer number (37135196021007).

Almost surely, 2^{212201120120020} is an apocalyptic number.

212201120120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212201120120020 is an abundant number, since it is smaller than the sum of its proper divisors (233421232132064).

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

212201120120020 is a wasteful number, since it uses less digits than its factorization.

212201120120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10610056006010 (or 10610056006008 counting only the distinct ones).

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

Adding to 212201120120020 its reverse (20021021102212), we get a palindrome (232222141222232).

The spelling of 212201120120020 in words is "two hundred twelve trillion, two hundred one billion, one hundred twenty million, one hundred twenty thousand, twenty".