11112020001 has 12 divisors (see below), whose sum is σ = 16058947840. Its totient is φ = 7404204600.

The previous prime is 11112019991. The next prime is 11112020011. The reversal of 11112020001 is 10002021111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11112019991) and next prime (11112020011).

It is not a de Polignac number, because 11112020001 - 2⁶ = 11112019937 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 not an unprimeable number, because it can be changed into a prime (11112020011) 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, 298861 + ... + 333978.

Almost surely, 2^11112020001 is an apocalyptic number.

It is an amenable number.

11112020001 is a deficient number, since it is larger than the sum of its proper divisors (4946927839).

11112020001 is a wasteful number, since it uses less digits than its factorization.

11112020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634796 (or 634793 counting only the distinct ones).

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

Adding to 11112020001 its reverse (10002021111), we get a palindrome (21114041112).

The spelling of 11112020001 in words is "eleven billion, one hundred twelve million, twenty thousand, one".