10001200112021 has 4 divisors (see below), whose sum is σ = 10150471755552. Its totient is φ = 9851928468492.

The previous prime is 10001200112003. The next prime is 10001200112027. The reversal of 10001200112021 is 12021100210001.

10001200112021 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10001200112021 - 2¹⁴ = 10001200095637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001200111993 and 10001200112011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001200112027) 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, 74635821665 + ... + 74635821798.

It is an arithmetic number, because the mean of its divisors is an integer number (2537617938888).

Almost surely, 2^{10001200112021} is an apocalyptic number.

It is an amenable number.

10001200112021 is a deficient number, since it is larger than the sum of its proper divisors (149271643531).

10001200112021 is an equidigital number, since it uses as much as digits as its factorization.

10001200112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149271643530.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10001200112021 its reverse (12021100210001), we get a palindrome (22022300322022).

The spelling of 10001200112021 in words is "ten trillion, one billion, two hundred million, one hundred twelve thousand, twenty-one".