10221111012 has 24 divisors (see below), whose sum is σ = 27256296256. Its totient is φ = 2920317408.

The previous prime is 10221110969. The next prime is 10221111023. The reversal of 10221111012 is 21011112201.

It is a super-2 number, since 2×10221111012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60839863 + ... + 60840030.

Almost surely, 2^10221111012 is an apocalyptic number.

10221111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10221111012 is an abundant number, since it is smaller than the sum of its proper divisors (17035185244).

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

10221111012 is a wasteful number, since it uses less digits than its factorization.

10221111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121679907 (or 121679905 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10221111012 its reverse (21011112201), we get a palindrome (31232223213).

The spelling of 10221111012 in words is "ten billion, two hundred twenty-one million, one hundred eleven thousand, twelve".