301661421421 has 4 divisors (see below), whose sum is σ = 303512105152. Its totient is φ = 299810737692.

The previous prime is 301661421419. The next prime is 301661421433. The reversal of 301661421421 is 124124166103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 301661421421 - 2¹ = 301661421419 is a prime.

It is a super-2 number, since 2×301661421421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (301661421401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925341621 + ... + 925341946.

It is an arithmetic number, because the mean of its divisors is an integer number (75878026288).

Almost surely, 2^301661421421 is an apocalyptic number.

It is an amenable number.

301661421421 is a deficient number, since it is larger than the sum of its proper divisors (1850683731).

301661421421 is a wasteful number, since it uses less digits than its factorization.

301661421421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850683730.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 301661421421 its reverse (124124166103), we get a palindrome (425785587524).

The spelling of 301661421421 in words is "three hundred one billion, six hundred sixty-one million, four hundred twenty-one thousand, four hundred twenty-one".