4221387641361 has 32 divisors (see below), whose sum is σ = 6152475732480. Its totient is φ = 2553306624000.

The previous prime is 4221387641333. The next prime is 4221387641371. The reversal of 4221387641361 is 1631467831224.

It is not a de Polignac number, because 4221387641361 - 2¹⁴ = 4221387624977 is a prime.

It is a super-2 number, since 2×4221387641361² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4221387641361.

It is not an unprimeable number, because it can be changed into a prime (4221387641371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36764706 + ... + 36879348.

It is an arithmetic number, because the mean of its divisors is an integer number (192264866640).

Almost surely, 2^{4221387641361} is an apocalyptic number.

It is an amenable number.

4221387641361 is a deficient number, since it is larger than the sum of its proper divisors (1931088091119).

4221387641361 is a wasteful number, since it uses less digits than its factorization.

4221387641361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116877.

The product of its digits is 1161216, while the sum is 48.

The spelling of 4221387641361 in words is "four trillion, two hundred twenty-one billion, three hundred eighty-seven million, six hundred forty-one thousand, three hundred sixty-one".