212120012120022 has 64 divisors (see below), whose sum is σ = 499253976864000. Its totient is φ = 66527712650880.

The previous prime is 212120012120021. The next prime is 212120012120059. The reversal of 212120012120022 is 220021210021212.

It is a happy number.

212120012120022 is a `hidden beast` number, since 2 + 121 + 200 + 121 + 200 + 22 = 666.

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 = 212120012119977 and 212120012120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120012120021) 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, 31178272 + ... + 37367427.

It is an arithmetic number, because the mean of its divisors is an integer number (7800843388500).

Almost surely, 2^{212120012120022} is an apocalyptic number.

212120012120022 is an abundant number, since it is smaller than the sum of its proper divisors (287133964743978).

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

212120012120022 is a wasteful number, since it uses less digits than its factorization.

212120012120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68549098 (or 68549092 counting only the distinct ones).

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

Adding to 212120012120022 its reverse (220021210021212), we get a palindrome (432141222141234).

The spelling of 212120012120022 in words is "two hundred twelve trillion, one hundred twenty billion, twelve million, one hundred twenty thousand, twenty-two".