121402024545 has 16 divisors (see below), whose sum is σ = 194269110912. Its totient is φ = 64739122560.

The previous prime is 121402024529. The next prime is 121402024559. The reversal of 121402024545 is 545420204121.

It is not a de Polignac number, because 121402024545 - 2⁴ = 121402024529 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 421797 + ... + 648626.

It is an arithmetic number, because the mean of its divisors is an integer number (12141819432).

Almost surely, 2^121402024545 is an apocalyptic number.

121402024545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121402024545 is a deficient number, since it is larger than the sum of its proper divisors (72867086367).

121402024545 is a wasteful number, since it uses less digits than its factorization.

121402024545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077992.

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 121402024545 its reverse (545420204121), we get a palindrome (666822228666).

The spelling of 121402024545 in words is "one hundred twenty-one billion, four hundred two million, twenty-four thousand, five hundred forty-five".