10121212112222 has 48 divisors (see below), whose sum is σ = 16255713070080. Its totient is φ = 4725051427200.

The previous prime is 10121212112203. The next prime is 10121212112243. The reversal of 10121212112222 is 22221121212101.

It is a junction number, because it is equal to n+sod(n) for n = 10121212112194 and 10121212112203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256740029 + ... + 256779447.

It is an arithmetic number, because the mean of its divisors is an integer number (338660688960).

Almost surely, 2^{10121212112222} is an apocalyptic number.

10121212112222 is a deficient number, since it is larger than the sum of its proper divisors (6134500957858).

10121212112222 is a wasteful number, since it uses less digits than its factorization.

10121212112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42977 (or 42960 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 10121212112222 its reverse (22221121212101), we get a palindrome (32342333324323).

The spelling of 10121212112222 in words is "ten trillion, one hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty-two".