10213212220121 has 4 divisors (see below), whose sum is σ = 10240160010000. Its totient is φ = 10186264430244.

The previous prime is 10213212220109. The next prime is 10213212220177. The reversal of 10213212220121 is 12102221231201.

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 not a de Polignac number, because 10213212220121 - 2²² = 10213208025817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10213212220093 and 10213212220102.

It is not an unprimeable number, because it can be changed into a prime (10213212220181) 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, 13473894371 + ... + 13473895128.

It is an arithmetic number, because the mean of its divisors is an integer number (2560040002500).

Almost surely, 2^{10213212220121} is an apocalyptic number.

It is an amenable number.

10213212220121 is a deficient number, since it is larger than the sum of its proper divisors (26947789879).

10213212220121 is an equidigital number, since it uses as much as digits as its factorization.

10213212220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26947789878.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 10213212220121 its reverse (12102221231201), we get a palindrome (22315433451322).

The spelling of 10213212220121 in words is "ten trillion, two hundred thirteen billion, two hundred twelve million, two hundred twenty thousand, one hundred twenty-one".