1321405016001 has 8 divisors (see below), whose sum is σ = 2013569548224. Its totient is φ = 755088580560.

The previous prime is 1321405015943. The next prime is 1321405016047. The reversal of 1321405016001 is 1006105041231.

It is a happy number.

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

It is not a de Polignac number, because 1321405016001 - 2⁶ = 1321405015937 is a prime.

It is a super-2 number, since 2×1321405016001² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321405011001) 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, 31462024170 + ... + 31462024211.

It is an arithmetic number, because the mean of its divisors is an integer number (251696193528).

Almost surely, 2^{1321405016001} is an apocalyptic number.

It is an amenable number.

1321405016001 is a deficient number, since it is larger than the sum of its proper divisors (692164532223).

1321405016001 is an equidigital number, since it uses as much as digits as its factorization.

1321405016001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62924048391.

The product of its (nonzero) digits is 720, while the sum is 24.

The spelling of 1321405016001 in words is "one trillion, three hundred twenty-one billion, four hundred five million, sixteen thousand, one".