221411635046661 has 8 divisors (see below), whose sum is σ = 295274924869120. Its totient is φ = 147578050960992.

The previous prime is 221411635046633. The next prime is 221411635046671. The reversal of 221411635046661 is 166640536114122.

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

It is not a de Polignac number, because 221411635046661 - 2⁵ = 221411635046629 is a prime.

It is a super-2 number, since 2×221411635046661² (a number of 29 digits) contains 22 as substring.

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 221411635046661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221411635046671) 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, 7426416805 + ... + 7426446618.

It is an arithmetic number, because the mean of its divisors is an integer number (36909365608640).

Almost surely, 2^{221411635046661} is an apocalyptic number.

It is an amenable number.

221411635046661 is a deficient number, since it is larger than the sum of its proper divisors (73863289822459).

221411635046661 is a wasteful number, since it uses less digits than its factorization.

221411635046661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14852868395.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 221411635046661 in words is "two hundred twenty-one trillion, four hundred eleven billion, six hundred thirty-five million, forty-six thousand, six hundred sixty-one".