212121020220122 has 32 divisors (see below), whose sum is σ = 347450437716480. Its totient is φ = 96535721992320.

The previous prime is 212121020220121. The next prime is 212121020220169. The reversal of 212121020220122 is 221022020121212.

It is a super-3 number, since 3×212121020220122³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212121020220094 and 212121020220103.

It is not an unprimeable number, because it can be changed into a prime (212121020220121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66289838 + ... + 69416025.

It is an arithmetic number, because the mean of its divisors is an integer number (10857826178640).

Almost surely, 2^{212121020220122} is an apocalyptic number.

212121020220122 is a deficient number, since it is larger than the sum of its proper divisors (135329417496358).

212121020220122 is a wasteful number, since it uses less digits than its factorization.

212121020220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135706718.

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

Adding to 212121020220122 its reverse (221022020121212), we get a palindrome (433143040341334).

The spelling of 212121020220122 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty million, two hundred twenty thousand, one hundred twenty-two".