10011111002021 has 8 divisors (see below), whose sum is σ = 10170851434200. Its totient is φ = 9851981432832.

The previous prime is 10011111002017. The next prime is 10011111002029. The reversal of 10011111002021 is 12020011111001.

It can be written as a sum of positive squares in 4 ways, for example, as 2108771569921 + 7902339432100 = 1452161^2 + 2811110^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10011111002021 - 2² = 10011111002017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011111001993 and 10011111002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011111002029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152682710 + ... + 152748263.

It is an arithmetic number, because the mean of its divisors is an integer number (1271356429275).

Almost surely, 2^{10011111002021} is an apocalyptic number.

It is an amenable number.

10011111002021 is a deficient number, since it is larger than the sum of its proper divisors (159740432179).

10011111002021 is an equidigital number, since it uses as much as digits as its factorization.

10011111002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305431495.

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

Adding to 10011111002021 its reverse (12020011111001), we get a palindrome (22031122113022).

The spelling of 10011111002021 in words is "ten trillion, eleven billion, one hundred eleven million, two thousand, twenty-one".