11100021101001 has 48 divisors (see below), whose sum is σ = 19136864547840. Its totient is φ = 6061910231520.

The previous prime is 11100021100963. The next prime is 11100021101009. The reversal of 11100021101001 is 10010112000111.

It is not a de Polignac number, because 11100021101001 - 2¹⁷ = 11100020969929 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (11100021101009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1574131 + ... + 4967688.

It is an arithmetic number, because the mean of its divisors is an integer number (398684678080).

Almost surely, 2^{11100021101001} is an apocalyptic number.

It is an amenable number.

11100021101001 is a deficient number, since it is larger than the sum of its proper divisors (8036843446839).

11100021101001 is a wasteful number, since it uses less digits than its factorization.

11100021101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6543026 (or 6543023 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11100021101001 its reverse (10010112000111), we get a palindrome (21110133101112).

The spelling of 11100021101001 in words is "eleven trillion, one hundred billion, twenty-one million, one hundred one thousand, one".