121424515345 has 32 divisors (see below), whose sum is σ = 170759748096. Its totient is φ = 81149299200.

The previous prime is 121424515343. The next prime is 121424515349. The reversal of 121424515345 is 543515424121.

It is not a de Polignac number, because 121424515345 - 2¹ = 121424515343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121424515343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1388260 + ... + 1473130.

It is an arithmetic number, because the mean of its divisors is an integer number (5336242128).

Almost surely, 2^121424515345 is an apocalyptic number.

It is an amenable number.

121424515345 is a deficient number, since it is larger than the sum of its proper divisors (49335232751).

121424515345 is an equidigital number, since it uses as much as digits as its factorization.

121424515345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85921.

The product of its digits is 96000, while the sum is 37.

Adding to 121424515345 its reverse (543515424121), we get a palindrome (664939939466).

The spelling of 121424515345 in words is "one hundred twenty-one billion, four hundred twenty-four million, five hundred fifteen thousand, three hundred forty-five".