10211012010021 has 4 divisors (see below), whose sum is σ = 13614682680032. Its totient is φ = 6807341340012.

The previous prime is 10211012010019. The next prime is 10211012010029. The reversal of 10211012010021 is 12001021011201.

10211012010021 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 not a de Polignac number, because 10211012010021 - 2¹ = 10211012010019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211012009979 and 10211012010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211012010029) 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, 1701835335001 + ... + 1701835335006.

It is an arithmetic number, because the mean of its divisors is an integer number (3403670670008).

Almost surely, 2^{10211012010021} is an apocalyptic number.

It is an amenable number.

10211012010021 is a deficient number, since it is larger than the sum of its proper divisors (3403670670011).

10211012010021 is an equidigital number, since it uses as much as digits as its factorization.

10211012010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403670670010.

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

Adding to 10211012010021 its reverse (12001021011201), we get a palindrome (22212033021222).

The spelling of 10211012010021 in words is "ten trillion, two hundred eleven billion, twelve million, ten thousand, twenty-one".