145215412403121 has 16 divisors (see below), whose sum is σ = 215378137235520. Its totient is φ = 96700388114880.

The previous prime is 145215412403119. The next prime is 145215412403183. The reversal of 145215412403121 is 121304214512541.

145215412403121 is a `hidden beast` number, since 1 + 4 + 5 + 21 + 541 + 2 + 40 + 31 + 21 = 666.

It is not a de Polignac number, because 145215412403121 - 2¹ = 145215412403119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145215412473121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3052387455 + ... + 3052435028.

It is an arithmetic number, because the mean of its divisors is an integer number (13461133577220).

Almost surely, 2^{145215412403121} is an apocalyptic number.

It is an amenable number.

145215412403121 is a deficient number, since it is larger than the sum of its proper divisors (70162724832399).

145215412403121 is an equidigital number, since it uses as much as digits as its factorization.

145215412403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6104823373 (or 6104823367 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

Adding to 145215412403121 its reverse (121304214512541), we get a palindrome (266519626915662).

The spelling of 145215412403121 in words is "one hundred forty-five trillion, two hundred fifteen billion, four hundred twelve million, four hundred three thousand, one hundred twenty-one".