4002121135524 has 12 divisors (see below), whose sum is σ = 9338282649584. Its totient is φ = 1334040378504.

The previous prime is 4002121135513. The next prime is 4002121135531. The reversal of 4002121135524 is 4255311212004.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×4002121135524² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4002121135491 and 4002121135500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166755047302 + ... + 166755047325.

Almost surely, 2^{4002121135524} is an apocalyptic number.

It is an amenable number.

4002121135524 is an abundant number, since it is smaller than the sum of its proper divisors (5336161514060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4002121135524 is a wasteful number, since it uses less digits than its factorization.

4002121135524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333510094634 (or 333510094632 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 4002121135524 its reverse (4255311212004), we get a palindrome (8257432347528).

The spelling of 4002121135524 in words is "four trillion, two billion, one hundred twenty-one million, one hundred thirty-five thousand, five hundred twenty-four".