10000020220121 has 4 divisors (see below), whose sum is σ = 10066245519744. Its totient is φ = 9933794920500.

The previous prime is 10000020220111. The next prime is 10000020220189. The reversal of 10000020220121 is 12102202000001.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10000020220121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10000020220111) 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, 33112649585 + ... + 33112649886.

It is an arithmetic number, because the mean of its divisors is an integer number (2516561379936).

Almost surely, 2^{10000020220121} is an apocalyptic number.

It is an amenable number.

10000020220121 is a deficient number, since it is larger than the sum of its proper divisors (66225299623).

10000020220121 is an equidigital number, since it uses as much as digits as its factorization.

10000020220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66225299622.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10000020220121 its reverse (12102202000001), we get a palindrome (22102222220122).

The spelling of 10000020220121 in words is "ten trillion, twenty million, two hundred twenty thousand, one hundred twenty-one".