121430211144221 has 8 divisors (see below), whose sum is σ = 139251027116544. Its totient is φ = 103727805909840.

The previous prime is 121430211144211. The next prime is 121430211144247. The reversal of 121430211144221 is 122441112034121.

It is a happy number.

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

It is not a de Polignac number, because 121430211144221 - 2¹⁸ = 121430210882077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121430211144211) 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, 29602682285 + ... + 29602686386.

It is an arithmetic number, because the mean of its divisors is an integer number (17406378389568).

Almost surely, 2^{121430211144221} is an apocalyptic number.

It is an amenable number.

121430211144221 is a deficient number, since it is larger than the sum of its proper divisors (17820815972323).

121430211144221 is an equidigital number, since it uses as much as digits as its factorization.

121430211144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59205368971.

The product of its (nonzero) digits is 3072, while the sum is 29.

Adding to 121430211144221 its reverse (122441112034121), we get a palindrome (243871323178342).

The spelling of 121430211144221 in words is "one hundred twenty-one trillion, four hundred thirty billion, two hundred eleven million, one hundred forty-four thousand, two hundred twenty-one".