121676211421 has 4 divisors (see below), whose sum is σ = 121677820000. Its totient is φ = 121674602844.

The previous prime is 121676211407. The next prime is 121676211439. The reversal of 121676211421 is 124112676121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124112676121 = 7 ⋅17730382303.

It is a cyclic number.

It is not a de Polignac number, because 121676211421 - 2⁵ = 121676211389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121676212421) 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, 684921 + ... + 844078.

It is an arithmetic number, because the mean of its divisors is an integer number (30419455000).

Almost surely, 2^121676211421 is an apocalyptic number.

It is an amenable number.

121676211421 is a deficient number, since it is larger than the sum of its proper divisors (1608579).

121676211421 is an equidigital number, since it uses as much as digits as its factorization.

121676211421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608578.

The product of its digits is 8064, while the sum is 34.

Adding to 121676211421 its reverse (124112676121), we get a palindrome (245788887542).

The spelling of 121676211421 in words is "one hundred twenty-one billion, six hundred seventy-six million, two hundred eleven thousand, four hundred twenty-one".