11100022021 has 16 divisors (see below), whose sum is σ = 12462436800. Its totient is φ = 9799211520.

The previous prime is 11100022013. The next prime is 11100022027. The reversal of 11100022021 is 12022000111.

It is not a de Polignac number, because 11100022021 - 2³ = 11100022013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11100021989 and 11100022007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100022027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14005 + ... + 149653.

It is an arithmetic number, because the mean of its divisors is an integer number (778902300).

Almost surely, 2^11100022021 is an apocalyptic number.

11100022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11100022021 is a deficient number, since it is larger than the sum of its proper divisors (1362414779).

11100022021 is a wasteful number, since it uses less digits than its factorization.

11100022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135876.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11100022021 its reverse (12022000111), we get a palindrome (23122022132).

The spelling of 11100022021 in words is "eleven billion, one hundred million, twenty-two thousand, twenty-one".