10121111012 has 48 divisors (see below), whose sum is σ = 18985881600. Its totient is φ = 4710410880.

The previous prime is 10121111009. The next prime is 10121111023. The reversal of 10121111012 is 21011112101.

It is a junction number, because it is equal to n+sod(n) for n = 10121110984 and 10121111002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962093 + ... + 972555.

It is an arithmetic number, because the mean of its divisors is an integer number (395539200).

Almost surely, 2^10121111012 is an apocalyptic number.

It is an amenable number.

10121111012 is a deficient number, since it is larger than the sum of its proper divisors (8864770588).

10121111012 is a wasteful number, since it uses less digits than its factorization.

10121111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10796 (or 10794 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10121111012 its reverse (21011112101), we get a palindrome (31132223113).

The spelling of 10121111012 in words is "ten billion, one hundred twenty-one million, one hundred eleven thousand, twelve".