10011211001 has 16 divisors (see below), whose sum is σ = 11120754816. Its totient is φ = 9010870000.

The previous prime is 10011210973. The next prime is 10011211003.

It is a happy number.

10011211001 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 10011211001 - 2²⁶ = 9944102137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10011211001.

It is not an unprimeable number, because it can be changed into a prime (10011211003) 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, 97196 + ... + 171666.

It is an arithmetic number, because the mean of its divisors is an integer number (695047176).

Almost surely, 2^10011211001 is an apocalyptic number.

10011211001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10011211001 is a deficient number, since it is larger than the sum of its proper divisors (1109543815).

10011211001 is an equidigital number, since it uses as much as digits as its factorization.

10011211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74605 (or 74583 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

The spelling of 10011211001 in words is "ten billion, eleven million, two hundred eleven thousand, one".