10120011101021 has 4 divisors (see below), whose sum is σ = 10121344619100. Its totient is φ = 10118677582944.

The previous prime is 10120011100963. The next prime is 10120011101041. The reversal of 10120011101021 is 12010111002101.

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 533024107225 + 9586986993796 = 730085^2 + 3096286^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120011101021 - 2¹⁸ = 10120010838877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10120011100993 and 10120011101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120011101041) 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, 666747656 + ... + 666762833.

It is an arithmetic number, because the mean of its divisors is an integer number (2530336154775).

Almost surely, 2^{10120011101021} is an apocalyptic number.

It is an amenable number.

10120011101021 is a deficient number, since it is larger than the sum of its proper divisors (1333518079).

10120011101021 is an equidigital number, since it uses as much as digits as its factorization.

10120011101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333518078.

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

Adding to 10120011101021 its reverse (12010111002101), we get a palindrome (22130122103122).

The spelling of 10120011101021 in words is "ten trillion, one hundred twenty billion, eleven million, one hundred one thousand, twenty-one".