11112021001001 has 16 divisors (see below), whose sum is σ = 11761907976000. Its totient is φ = 10468642564800.

The previous prime is 11112021000989. The next prime is 11112021001069. The reversal of 11112021001001 is 10010012021111.

It is a cyclic number.

It is not a de Polignac number, because 11112021001001 - 2³⁴ = 11094841131817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11112021001901) 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, 164002991 + ... + 164070731.

It is an arithmetic number, because the mean of its divisors is an integer number (735119248500).

Almost surely, 2^{11112021001001} is an apocalyptic number.

It is an amenable number.

11112021001001 is a deficient number, since it is larger than the sum of its proper divisors (649886974999).

11112021001001 is a wasteful number, since it uses less digits than its factorization.

11112021001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115640.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11112021001001 its reverse (10010012021111), we get a palindrome (21122033022112).

The spelling of 11112021001001 in words is "eleven trillion, one hundred twelve billion, twenty-one million, one thousand, one".