11120001221021 has 24 divisors (see below), whose sum is σ = 14854176041760. Its totient is φ = 8208886744800.

The previous prime is 11120001221003. The next prime is 11120001221107. The reversal of 11120001221021 is 12012210002111.

It is not a de Polignac number, because 11120001221021 - 2¹⁸ = 11120000958877 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11120001220987 and 11120001221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120001221621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 542905550 + ... + 542926031.

It is an arithmetic number, because the mean of its divisors is an integer number (618924001740).

Almost surely, 2^{11120001221021} is an apocalyptic number.

11120001221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11120001221021 is a deficient number, since it is larger than the sum of its proper divisors (3734174820739).

11120001221021 is a wasteful number, since it uses less digits than its factorization.

11120001221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085831625 (or 1085831618 counting only the distinct ones).

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

Adding to 11120001221021 its reverse (12012210002111), we get a palindrome (23132211223132).

The spelling of 11120001221021 in words is "eleven trillion, one hundred twenty billion, one million, two hundred twenty-one thousand, twenty-one".