10122111221212 has 24 divisors (see below), whose sum is σ = 17718880476752. Its totient is φ = 5059574150400.

The previous prime is 10122111221149. The next prime is 10122111221219. The reversal of 10122111221212 is 21212211122101.

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 10122111221212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122111221219) 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, 331933438 + ... + 331963930.

Almost surely, 2^{10122111221212} is an apocalyptic number.

It is an amenable number.

10122111221212 is a deficient number, since it is larger than the sum of its proper divisors (7596769255540).

10122111221212 is a wasteful number, since it uses less digits than its factorization.

10122111221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52069 (or 52067 counting only the distinct ones).

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

Adding to 10122111221212 its reverse (21212211122101), we get a palindrome (31334322343313).

The spelling of 10122111221212 in words is "ten trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twelve".