10011101021 has 4 divisors (see below), whose sum is σ = 10016704992. Its totient is φ = 10005497052.

The previous prime is 10011101011. The next prime is 10011101027. The reversal of 10011101021 is 12010111001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10011101021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011101027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2799305 + ... + 2802878.

It is an arithmetic number, because the mean of its divisors is an integer number (2504176248).

Almost surely, 2^10011101021 is an apocalyptic number.

It is an amenable number.

10011101021 is a deficient number, since it is larger than the sum of its proper divisors (5603971).

10011101021 is an equidigital number, since it uses as much as digits as its factorization.

10011101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5603970.

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

Adding to 10011101021 its reverse (12010111001), we get a palindrome (22021212022).

The spelling of 10011101021 in words is "ten billion, eleven million, one hundred one thousand, twenty-one".