121883627521 has 4 divisors (see below), whose sum is σ = 121885707712. Its totient is φ = 121881547332.

The previous prime is 121883627483. The next prime is 121883627563. The reversal of 121883627521 is 125726388121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 125726388121 = 8537 ⋅14727233.

It is a cyclic number.

It is not a de Polignac number, because 121883627521 - 2⁹ = 121883627009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121883627821) 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, 949581 + ... + 1070266.

It is an arithmetic number, because the mean of its divisors is an integer number (30471426928).

Almost surely, 2^121883627521 is an apocalyptic number.

It is an amenable number.

121883627521 is a deficient number, since it is larger than the sum of its proper divisors (2080191).

121883627521 is an equidigital number, since it uses as much as digits as its factorization.

121883627521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080190.

The product of its digits is 322560, while the sum is 46.

The spelling of 121883627521 in words is "one hundred twenty-one billion, eight hundred eighty-three million, six hundred twenty-seven thousand, five hundred twenty-one".