10211100012021 has 4 divisors (see below), whose sum is σ = 13614800016032. Its totient is φ = 6807400008012.

The previous prime is 10211100011993. The next prime is 10211100012031. The reversal of 10211100012021 is 12021000111201.

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 not a de Polignac number, because 10211100012021 - 2⁵ = 10211100011989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211100011988 and 10211100012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211100012031) 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, 1701850002001 + ... + 1701850002006.

It is an arithmetic number, because the mean of its divisors is an integer number (3403700004008).

Almost surely, 2^{10211100012021} is an apocalyptic number.

It is an amenable number.

10211100012021 is a deficient number, since it is larger than the sum of its proper divisors (3403700004011).

10211100012021 is an equidigital number, since it uses as much as digits as its factorization.

10211100012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403700004010.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10211100012021 its reverse (12021000111201), we get a palindrome (22232100123222).

The spelling of 10211100012021 in words is "ten trillion, two hundred eleven billion, one hundred million, twelve thousand, twenty-one".