10121221112 has 16 divisors (see below), whose sum is σ = 19976094600. Its totient is φ = 4794262560.

The previous prime is 10121221111. The next prime is 10121221147. The reversal of 10121221112 is 21112212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121221111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33293339 + ... + 33293642.

Almost surely, 2^10121221112 is an apocalyptic number.

It is an amenable number.

10121221112 is a deficient number, since it is larger than the sum of its proper divisors (9854873488).

10121221112 is a wasteful number, since it uses less digits than its factorization.

10121221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66587006 (or 66587002 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10121221112 its reverse (21112212101), we get a palindrome (31233433213).

The spelling of 10121221112 in words is "ten billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twelve".