10221221112 has 64 divisors (see below), whose sum is σ = 25828761600. Its totient is φ = 3370469760.

The previous prime is 10221221099. The next prime is 10221221147. The reversal of 10221221112 is 21112212201.

It is a super-2 number, since 2×10221221112² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10221221091 and 10221221100.

It is a congruent number.

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, 1089562 + ... + 1098902.

It is an arithmetic number, because the mean of its divisors is an integer number (403574400).

Almost surely, 2^10221221112 is an apocalyptic number.

10221221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10221221112 is an abundant number, since it is smaller than the sum of its proper divisors (15607540488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221221112 is a wasteful number, since it uses less digits than its factorization.

10221221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9836 (or 9832 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10221221112 its reverse (21112212201), we get a palindrome (31333433313).

The spelling of 10221221112 in words is "ten billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred twelve".