1101221000012 has 12 divisors (see below), whose sum is σ = 2202442000080. Its totient is φ = 471951857136.

The previous prime is 1101221000003. The next prime is 1101221000051. The reversal of 1101221000012 is 2100001221011.

1101221000012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1101220999957 and 1101221000002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19664660687 + ... + 19664660742.

It is an arithmetic number, because the mean of its divisors is an integer number (183536833340).

Almost surely, 2^{1101221000012} is an apocalyptic number.

It is an amenable number.

1101221000012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1101221000012 is a wasteful number, since it uses less digits than its factorization.

1101221000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39329321440 (or 39329321438 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1101221000012 its reverse (2100001221011), we get a palindrome (3201222221023).

The spelling of 1101221000012 in words is "one trillion, one hundred one billion, two hundred twenty-one million, twelve", and thus it is an aban number.