20120212210122 has 24 divisors (see below), whose sum is σ = 44416317522564. Its totient is φ = 6580195187904.

The previous prime is 20120212210061. The next prime is 20120212210127. The reversal of 20120212210122 is 22101221202102.

It is a happy number.

20120212210122 is a `hidden beast` number, since 2 + 0 + 120 + 212 + 210 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20114229342321 + 5982867801 = 4484889^2 + 77349^2 .

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 = 20120212210095 and 20120212210104.

It is not an unprimeable number, because it can be changed into a prime (20120212210127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10545183643 + ... + 10545185550.

Almost surely, 2^{20120212210122} is an apocalyptic number.

20120212210122 is an abundant number, since it is smaller than the sum of its proper divisors (24296105312442).

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

20120212210122 is a wasteful number, since it uses less digits than its factorization.

20120212210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21090369254 (or 21090369251 counting only the distinct ones).

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

Adding to 20120212210122 its reverse (22101221202102), we get a palindrome (42221433412224).

The spelling of 20120212210122 in words is "twenty trillion, one hundred twenty billion, two hundred twelve million, two hundred ten thousand, one hundred twenty-two".