212122210201220 has 96 divisors (see below), whose sum is σ = 517123773331200. Its totient is φ = 72233161482240.

The previous prime is 212122210201219. The next prime is 212122210201229. The reversal of 212122210201220 is 22102012221212.

212122210201220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 212122210201192 and 212122210201201.

It is not an unprimeable number, because it can be changed into a prime (212122210201229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141761189 + ... + 143249708.

It is an arithmetic number, because the mean of its divisors is an integer number (5386705972200).

Almost surely, 2^{212122210201220} is an apocalyptic number.

212122210201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212122210201220 is an abundant number, since it is smaller than the sum of its proper divisors (305001563129980).

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

212122210201220 is a wasteful number, since it uses less digits than its factorization.

212122210201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285011133 (or 285011131 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212122210201220 its reverse (22102012221212), we get a palindrome (234224222422432).

The spelling of 212122210201220 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred ten million, two hundred one thousand, two hundred twenty".