10211002100021 has 16 divisors (see below), whose sum is σ = 10901726001600. Its totient is φ = 9536118553728.

The previous prime is 10211002099997. The next prime is 10211002100051. The reversal of 10211002100021 is 12000120011201.

10211002100021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10211002100021 - 2¹⁴ = 10211002083637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211002099975 and 10211002100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211002100051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6363506 + ... + 7804883.

It is an arithmetic number, because the mean of its divisors is an integer number (681357875100).

Almost surely, 2^{10211002100021} is an apocalyptic number.

It is an amenable number.

10211002100021 is a deficient number, since it is larger than the sum of its proper divisors (690723901579).

10211002100021 is a wasteful number, since it uses less digits than its factorization.

10211002100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14168948.

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

Adding to 10211002100021 its reverse (12000120011201), we get a palindrome (22211122111222).

The spelling of 10211002100021 in words is "ten trillion, two hundred eleven billion, two million, one hundred thousand, twenty-one".