210122111021212 has 48 divisors (see below), whose sum is σ = 413385599112192. Its totient is φ = 92725028510400.

The previous prime is 210122111021201. The next prime is 210122111021213. The reversal of 210122111021212 is 212120111221012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 210122111021212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210122111021213) 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, 32971914 + ... + 38825137.

It is an arithmetic number, because the mean of its divisors is an integer number (8612199981504).

Almost surely, 2^{210122111021212} is an apocalyptic number.

It is an amenable number.

210122111021212 is a deficient number, since it is larger than the sum of its proper divisors (203263488090980).

210122111021212 is a wasteful number, since it uses less digits than its factorization.

210122111021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71799538 (or 71799536 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 210122111021212 its reverse (212120111221012), we get a palindrome (422242222242224).

The spelling of 210122111021212 in words is "two hundred ten trillion, one hundred twenty-two billion, one hundred eleven million, twenty-one thousand, two hundred twelve".