3521121023643 has 8 divisors (see below), whose sum is σ = 4764900091968. Its totient is φ = 2312377985544.

The previous prime is 3521121023621. The next prime is 3521121023663. The reversal of 3521121023643 is 3463201211253.

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

It is not a de Polignac number, because 3521121023643 - 2⁵ = 3521121023611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3521121023663) 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, 8759007321 + ... + 8759007722.

It is an arithmetic number, because the mean of its divisors is an integer number (595612511496).

Almost surely, 2^{3521121023643} is an apocalyptic number.

3521121023643 is a deficient number, since it is larger than the sum of its proper divisors (1243779068325).

3521121023643 is a wasteful number, since it uses less digits than its factorization.

3521121023643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17518015113.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 3521121023643 its reverse (3463201211253), we get a palindrome (6984322234896).

The spelling of 3521121023643 in words is "three trillion, five hundred twenty-one billion, one hundred twenty-one million, twenty-three thousand, six hundred forty-three".