121300211221 has 8 divisors (see below), whose sum is σ = 144656152704. Its totient is φ = 99451104720.

The previous prime is 121300211191. The next prime is 121300211237. The reversal of 121300211221 is 122112003121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121300211221 - 2⁷ = 121300211093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121300211195 and 121300211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121300211251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376708570 + ... + 376708891.

It is an arithmetic number, because the mean of its divisors is an integer number (18082019088).

Almost surely, 2^121300211221 is an apocalyptic number.

It is an amenable number.

121300211221 is a deficient number, since it is larger than the sum of its proper divisors (23355941483).

121300211221 is an equidigital number, since it uses as much as digits as its factorization.

121300211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753417491.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121300211221 its reverse (122112003121), we get a palindrome (243412214342).

The spelling of 121300211221 in words is "one hundred twenty-one billion, three hundred million, two hundred eleven thousand, two hundred twenty-one".