212122102121220 has 96 divisors (see below), whose sum is σ = 611009338859136. Its totient is φ = 54945509760000.

The previous prime is 212122102121219. The next prime is 212122102121227. The reversal of 212122102121220 is 22121201221212.

It is not an unprimeable number, because it can be changed into a prime (212122102121227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78158706 + ... + 80827145.

It is an arithmetic number, because the mean of its divisors is an integer number (6364680613116).

Almost surely, 2^{212122102121220} is an apocalyptic number.

212122102121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212122102121220 is an abundant number, since it is smaller than the sum of its proper divisors (398887236737916).

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

212122102121220 is a wasteful number, since it uses less digits than its factorization.

212122102121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158986501 (or 158986499 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212122102121220 its reverse (22121201221212), we get a palindrome (234243303342432).

The spelling of 212122102121220 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred two million, one hundred twenty-one thousand, two hundred twenty".