10100202221221 has 4 divisors (see below), whose sum is σ = 11543088252832. Its totient is φ = 8657316189612.

The previous prime is 10100202221159. The next prime is 10100202221233. The reversal of 10100202221221 is 12212220200101.

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 not a de Polignac number, because 10100202221221 - 2⁷ = 10100202221093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10100202221195 and 10100202221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100202225221) 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, 721443015795 + ... + 721443015808.

It is an arithmetic number, because the mean of its divisors is an integer number (2885772063208).

Almost surely, 2^{10100202221221} is an apocalyptic number.

It is an amenable number.

10100202221221 is a deficient number, since it is larger than the sum of its proper divisors (1442886031611).

10100202221221 is an equidigital number, since it uses as much as digits as its factorization.

10100202221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442886031610.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10100202221221 its reverse (12212220200101), we get a palindrome (22312422421322).

The spelling of 10100202221221 in words is "ten trillion, one hundred billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-one".