121201444534 has 4 divisors (see below), whose sum is σ = 181802166804. Its totient is φ = 60600722266.

The previous prime is 121201444501. The next prime is 121201444537. The reversal of 121201444534 is 435444102121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 121201444496 and 121201444505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201444537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30300361132 + ... + 30300361135.

It is an arithmetic number, because the mean of its divisors is an integer number (45450541701).

Almost surely, 2^121201444534 is an apocalyptic number.

121201444534 is a deficient number, since it is larger than the sum of its proper divisors (60600722270).

121201444534 is an equidigital number, since it uses as much as digits as its factorization.

121201444534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60600722269.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 121201444534 its reverse (435444102121), we get a palindrome (556645546655).

The spelling of 121201444534 in words is "one hundred twenty-one billion, two hundred one million, four hundred forty-four thousand, five hundred thirty-four".