10111123223212 has 24 divisors (see below), whose sum is σ = 19305944098560. Its totient is φ = 4595276846160.

The previous prime is 10111123223207. The next prime is 10111123223213. The reversal of 10111123223212 is 21232232111101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (10111123223213) 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, 16909168 + ... + 17496919.

It is an arithmetic number, because the mean of its divisors is an integer number (804414337440).

Almost surely, 2^{10111123223212} is an apocalyptic number.

It is an amenable number.

10111123223212 is a deficient number, since it is larger than the sum of its proper divisors (9194820875348).

10111123223212 is a wasteful number, since it uses less digits than its factorization.

10111123223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34412781 (or 34412779 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 10111123223212 its reverse (21232232111101), we get a palindrome (31343355334313).

It can be divided in two parts, 1011112 and 3223212, that added together give a palindrome (4234324).

The spelling of 10111123223212 in words is "ten trillion, one hundred eleven billion, one hundred twenty-three million, two hundred twenty-three thousand, two hundred twelve".