10121212222 has 96 divisors (see below), whose sum is σ = 17728048800. Its totient is φ = 4324320000.

The previous prime is 10121212219. The next prime is 10121212243. The reversal of 10121212222 is 22221212101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10121212196 and 10121212205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77261097 + ... + 77261227.

It is an arithmetic number, because the mean of its divisors is an integer number (184667175).

Almost surely, 2^10121212222 is an apocalyptic number.

10121212222 is a deficient number, since it is larger than the sum of its proper divisors (7606836578).

10121212222 is a wasteful number, since it uses less digits than its factorization.

10121212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10121212222 its reverse (22221212101), we get a palindrome (32342424323).

The spelling of 10121212222 in words is "ten billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twenty-two".