10202101100021 has 4 divisors (see below), whose sum is σ = 10202111004000. Its totient is φ = 10202091196044.

The previous prime is 10202101099999. The next prime is 10202101100131. The reversal of 10202101100021 is 12000110120201.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10202101100021 - 2¹⁴ = 10202101083637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10202101099975 and 10202101100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202101130021) 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, 3200291 + ... + 5535888.

It is an arithmetic number, because the mean of its divisors is an integer number (2550527751000).

Almost surely, 2^{10202101100021} is an apocalyptic number.

It is an amenable number.

10202101100021 is a deficient number, since it is larger than the sum of its proper divisors (9903979).

10202101100021 is an equidigital number, since it uses as much as digits as its factorization.

10202101100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9903978.

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

Adding to 10202101100021 its reverse (12000110120201), we get a palindrome (22202211220222).

The spelling of 10202101100021 in words is "ten trillion, two hundred two billion, one hundred one million, one hundred thousand, twenty-one".