1401521213105 has 16 divisors (see below), whose sum is σ = 1816910225424. Its totient is φ = 1031704608000.

The previous prime is 1401521213093. The next prime is 1401521213119. The reversal of 1401521213105 is 5013121251041.

It can be written as a sum of positive squares in 8 ways, for example, as 875704795681 + 525816417424 = 935791^2 + 725132^2 .

It is not a de Polignac number, because 1401521213105 - 2⁸ = 1401521212849 is a prime.

It is a super-3 number, since 3×1401521213105³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33988646 + ... + 34029855.

It is an arithmetic number, because the mean of its divisors is an integer number (113556889089).

Almost surely, 2^{1401521213105} is an apocalyptic number.

It is an amenable number.

1401521213105 is a deficient number, since it is larger than the sum of its proper divisors (415389012319).

1401521213105 is a wasteful number, since it uses less digits than its factorization.

1401521213105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68018836.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 1401521213105 its reverse (5013121251041), we get a palindrome (6414642464146).

The spelling of 1401521213105 in words is "one trillion, four hundred one billion, five hundred twenty-one million, two hundred thirteen thousand, one hundred five".