10000000220121 has 40 divisors (see below), whose sum is σ = 15727851659520. Its totient is φ = 6314442114528.

The previous prime is 10000000220087. The next prime is 10000000220131. The reversal of 10000000220121 is 12102200000001.

It is not a de Polignac number, because 10000000220121 - 2¹¹ = 10000000218073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10000000220131) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6547111 + ... + 7928723.

It is an arithmetic number, because the mean of its divisors is an integer number (393196291488).

Almost surely, 2^{10000000220121} is an apocalyptic number.

It is an amenable number.

10000000220121 is a deficient number, since it is larger than the sum of its proper divisors (5727851439399).

10000000220121 is a wasteful number, since it uses less digits than its factorization.

10000000220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386347 (or 1386338 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10000000220121 its reverse (12102200000001), we get a palindrome (22102200220122).

The spelling of 10000000220121 in words is "ten trillion, two hundred twenty thousand, one hundred twenty-one".