10021022211121 has 4 divisors (see below), whose sum is σ = 10265437387044. Its totient is φ = 9776607035200.

The previous prime is 10021022211059. The next prime is 10021022211149. The reversal of 10021022211121 is 12111222012001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4551672906225 + 5469349304896 = 2133465^2 + 2338664^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021022211121 - 2¹¹ = 10021022209073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021022211095 and 10021022211104.

It is not an unprimeable number, because it can be changed into a prime (10021022211191) 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, 122207587900 + ... + 122207587981.

It is an arithmetic number, because the mean of its divisors is an integer number (2566359346761).

Almost surely, 2^{10021022211121} is an apocalyptic number.

It is an amenable number.

10021022211121 is a deficient number, since it is larger than the sum of its proper divisors (244415175923).

10021022211121 is an equidigital number, since it uses as much as digits as its factorization.

10021022211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244415175922.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10021022211121 its reverse (12111222012001), we get a palindrome (22132244223122).

The spelling of 10021022211121 in words is "ten trillion, twenty-one billion, twenty-two million, two hundred eleven thousand, one hundred twenty-one".