11012000100021 has 12 divisors (see below), whose sum is σ = 15907876117120. Its totient is φ = 7340570130600.

The previous prime is 11012000100001. The next prime is 11012000100119. The reversal of 11012000100021 is 12000100021011.

It is a happy number.

It is not a de Polignac number, because 11012000100021 - 2³⁷ = 10874561146549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012000099976 and 11012000100012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012000100001) 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, 63514405 + ... + 63687546.

Almost surely, 2^{11012000100021} is an apocalyptic number.

It is an amenable number.

11012000100021 is a deficient number, since it is larger than the sum of its proper divisors (4895876017099).

11012000100021 is a wasteful number, since it uses less digits than its factorization.

11012000100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127211576 (or 127211573 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11012000100021 its reverse (12000100021011), we get a palindrome (23012100121032).

The spelling of 11012000100021 in words is "eleven trillion, twelve billion, one hundred thousand, twenty-one".