10122111112 has 8 divisors (see below), whose sum is σ = 18978958350. Its totient is φ = 5061055552.

The previous prime is 10122111107. The next prime is 10122111133. The reversal of 10122111112 is 21111122101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9742874436 + 379236676 = 98706^2 + 19474^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 10122111092 and 10122111101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632631937 + ... + 632631952.

Almost surely, 2^10122111112 is an apocalyptic number.

It is an amenable number.

10122111112 is a deficient number, since it is larger than the sum of its proper divisors (8856847238).

10122111112 is a wasteful number, since it uses less digits than its factorization.

10122111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265263895 (or 1265263891 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10122111112 its reverse (21111122101), we get a palindrome (31233233213).

The spelling of 10122111112 in words is "ten billion, one hundred twenty-two million, one hundred eleven thousand, one hundred twelve".