121000101002221 has 4 divisors (see below), whose sum is σ = 138285829716832. Its totient is φ = 103714372287612.

The previous prime is 121000101002189. The next prime is 121000101002273. The reversal of 121000101002221 is 122200101000121.

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 121000101002221 - 2⁵ = 121000101002189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000101008221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8642864357295 + ... + 8642864357308.

It is an arithmetic number, because the mean of its divisors is an integer number (34571457429208).

Almost surely, 2^{121000101002221} is an apocalyptic number.

It is an amenable number.

121000101002221 is a deficient number, since it is larger than the sum of its proper divisors (17285728714611).

121000101002221 is an equidigital number, since it uses as much as digits as its factorization.

121000101002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17285728714610.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121000101002221 its reverse (122200101000121), we get a palindrome (243200202002342).

The spelling of 121000101002221 in words is "one hundred twenty-one trillion, one hundred one million, two thousand, two hundred twenty-one".