121232222989 has 4 divisors (see below), whose sum is σ = 124051577056. Its totient is φ = 118412868924.

The previous prime is 121232222987. The next prime is 121232223041. The reversal of 121232222989 is 989222232121.

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 121232222989 - 2¹ = 121232222987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2819354023 = 121232222989 / (1 + 2 + 1 + 2 + 3 + 2 + 2 + 2 + 2 + 9 + 8 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121232222987) 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, 1409676969 + ... + 1409677054.

It is an arithmetic number, because the mean of its divisors is an integer number (31012894264).

Almost surely, 2^121232222989 is an apocalyptic number.

It is an amenable number.

121232222989 is a deficient number, since it is larger than the sum of its proper divisors (2819354067).

121232222989 is an equidigital number, since it uses as much as digits as its factorization.

121232222989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819354066.

The product of its digits is 124416, while the sum is 43.

The spelling of 121232222989 in words is "one hundred twenty-one billion, two hundred thirty-two million, two hundred twenty-two thousand, nine hundred eighty-nine".