3101421255661 has 8 divisors (see below), whose sum is σ = 3104535498624. Its totient is φ = 3098308577760.

The previous prime is 3101421255649. The next prime is 3101421255719. The reversal of 3101421255661 is 1665521241013.

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 3101421255661 - 2¹³ = 3101421247469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3101421255661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3101421255601) 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, 3594385 + ... + 4372921.

It is an arithmetic number, because the mean of its divisors is an integer number (388066937328).

Almost surely, 2^{3101421255661} is an apocalyptic number.

It is an amenable number.

3101421255661 is a deficient number, since it is larger than the sum of its proper divisors (3114242963).

3101421255661 is a wasteful number, since it uses less digits than its factorization.

3101421255661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782531.

The product of its (nonzero) digits is 43200, while the sum is 37.

Adding to 3101421255661 its reverse (1665521241013), we get a palindrome (4766942496674).

The spelling of 3101421255661 in words is "three trillion, one hundred one billion, four hundred twenty-one million, two hundred fifty-five thousand, six hundred sixty-one".