10010221100021 has 8 divisors (see below), whose sum is σ = 10030692951960. Its totient is φ = 9989752407552.

The previous prime is 10010221099997. The next prime is 10010221100051. The reversal of 10010221100021 is 12000112201001.

It can be written as a sum of positive squares in 4 ways, for example, as 8917957827025 + 1092263272996 = 2986295^2 + 1045114^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10010221100021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10010221099975 and 10010221100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010221100051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5606141 + ... + 7172813.

It is an arithmetic number, because the mean of its divisors is an integer number (1253836618995).

Almost surely, 2^{10010221100021} is an apocalyptic number.

It is an amenable number.

10010221100021 is a deficient number, since it is larger than the sum of its proper divisors (20471851939).

10010221100021 is a wasteful number, since it uses less digits than its factorization.

10010221100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579735.

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

Adding to 10010221100021 its reverse (12000112201001), we get a palindrome (22010333301022).

The spelling of 10010221100021 in words is "ten trillion, ten billion, two hundred twenty-one million, one hundred thousand, twenty-one".