121243441434 has 16 divisors (see below), whose sum is σ = 243266587200. Its totient is φ = 40284529760.

The previous prime is 121243441427. The next prime is 121243441441. The reversal of 121243441434 is 434144342121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121243441427) and next prime (121243441441).

It is a junction number, because it is equal to n+sod(n) for n = 121243441395 and 121243441404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32485659 + ... + 32489390.

It is an arithmetic number, because the mean of its divisors is an integer number (15204161700).

Almost surely, 2^121243441434 is an apocalyptic number.

121243441434 is an abundant number, since it is smaller than the sum of its proper divisors (122023145766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121243441434 is a wasteful number, since it uses less digits than its factorization.

121243441434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64975365.

The product of its digits is 36864, while the sum is 33.

Adding to 121243441434 its reverse (434144342121), we get a palindrome (555387783555).

The spelling of 121243441434 in words is "one hundred twenty-one billion, two hundred forty-three million, four hundred forty-one thousand, four hundred thirty-four".