10011012110021 has 4 divisors (see below), whose sum is σ = 10781089964652. Its totient is φ = 9240934255392.

The previous prime is 10011012109991. The next prime is 10011012110023. The reversal of 10011012110021 is 12001121011001.

10011012110021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1078505097121 + 8932507012900 = 1038511^2 + 2988730^2 .

It is a cyclic number.

It is not a de Polignac number, because 10011012110021 - 2⁶ = 10011012109957 is a prime.

It is a super-2 number, since 2×10011012110021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10011012109984 and 10011012110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011012110023) 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, 385038927296 + ... + 385038927321.

It is an arithmetic number, because the mean of its divisors is an integer number (2695272491163).

Almost surely, 2^{10011012110021} is an apocalyptic number.

It is an amenable number.

10011012110021 is a deficient number, since it is larger than the sum of its proper divisors (770077854631).

10011012110021 is an equidigital number, since it uses as much as digits as its factorization.

10011012110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770077854630.

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

Adding to 10011012110021 its reverse (12001121011001), we get a palindrome (22012133121022).

The spelling of 10011012110021 in words is "ten trillion, eleven billion, twelve million, one hundred ten thousand, twenty-one".