121523344055 has 16 divisors (see below), whose sum is σ = 148947047424. Its totient is φ = 95139772320.

The previous prime is 121523344043. The next prime is 121523344097. The reversal of 121523344055 is 550443325121.

It is a de Polignac number, because none of the positive numbers 2^k-121523344055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2666510 + ... + 2711700.

It is an arithmetic number, because the mean of its divisors is an integer number (9309190464).

Almost surely, 2^121523344055 is an apocalyptic number.

121523344055 is a deficient number, since it is larger than the sum of its proper divisors (27423703369).

121523344055 is a wasteful number, since it uses less digits than its factorization.

121523344055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56686.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 121523344055 its reverse (550443325121), we get a palindrome (671966669176).

The spelling of 121523344055 in words is "one hundred twenty-one billion, five hundred twenty-three million, three hundred forty-four thousand, fifty-five".