212120022121102 has 16 divisors (see below), whose sum is σ = 318521507396400. Its totient is φ = 105946187675328.

The previous prime is 212120022121069. The next prime is 212120022121109. The reversal of 212120022121102 is 201121220021212.

It is a self number, because there is not a number n which added to its sum of digits gives 212120022121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120022121109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576309024 + ... + 576676972.

It is an arithmetic number, because the mean of its divisors is an integer number (19907594212275).

Almost surely, 2^{212120022121102} is an apocalyptic number.

212120022121102 is a deficient number, since it is larger than the sum of its proper divisors (106401485275298).

212120022121102 is a wasteful number, since it uses less digits than its factorization.

212120022121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676515.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212120022121102 its reverse (201121220021212), we get a palindrome (413241242142314).

The spelling of 212120022121102 in words is "two hundred twelve trillion, one hundred twenty billion, twenty-two million, one hundred twenty-one thousand, one hundred two".