1520312120401 has 8 divisors (see below), whose sum is σ = 1531432496000. Its totient is φ = 1509226551360.

The previous prime is 1520312120357. The next prime is 1520312120407. The reversal of 1520312120401 is 1040212130251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1520312120401 - 2²¹ = 1520310023249 is a prime.

It is a super-2 number, since 2×1520312120401² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1520312120407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8613960 + ... + 8788681.

It is an arithmetic number, because the mean of its divisors is an integer number (191429062000).

Almost surely, 2^{1520312120401} is an apocalyptic number.

It is an amenable number.

1520312120401 is a deficient number, since it is larger than the sum of its proper divisors (11120375599).

1520312120401 is a wasteful number, since it uses less digits than its factorization.

1520312120401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17403279.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 1520312120401 its reverse (1040212130251), we get a palindrome (2560524250652).

The spelling of 1520312120401 in words is "one trillion, five hundred twenty billion, three hundred twelve million, one hundred twenty thousand, four hundred one".