11220012000021 has 12 divisors (see below), whose sum is σ = 16443653950976. Its totient is φ = 6800007272520.

The previous prime is 11220011999971. The next prime is 11220012000061. The reversal of 11220012000021 is 12000021002211.

It is not a de Polignac number, because 11220012000021 - 2³⁴ = 11202832130837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220011999970 and 11220012000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220012000061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15454561621 + ... + 15454562346.

Almost surely, 2^{11220012000021} is an apocalyptic number.

11220012000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220012000021 is a deficient number, since it is larger than the sum of its proper divisors (5223641950955).

11220012000021 is a wasteful number, since it uses less digits than its factorization.

11220012000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30909123992 (or 30909123981 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11220012000021 its reverse (12000021002211), we get a palindrome (23220033002232).

The spelling of 11220012000021 in words is "eleven trillion, two hundred twenty billion, twelve million, twenty-one", and thus it is an aban number.