47213551516221 has 24 divisors (see below), whose sum is σ = 69869573242560. Its totient is φ = 30704101646400.

The previous prime is 47213551516163. The next prime is 47213551516249. The reversal of 47213551516221 is 12261515531274.

47213551516221 is a `hidden beast` number, since 4 + 7 + 2 + 1 + 3 + 5 + 5 + 15 + 1 + 622 + 1 = 666.

It is not a de Polignac number, because 47213551516221 - 2¹⁷ = 47213551385149 is a prime.

It is a super-2 number, since 2×47213551516221² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47213551516121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5212335 + ... + 11027036.

It is an arithmetic number, because the mean of its divisors is an integer number (2911232218440).

Almost surely, 2^{47213551516221} is an apocalyptic number.

47213551516221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

47213551516221 is a deficient number, since it is larger than the sum of its proper divisors (22656021726339).

47213551516221 is a wasteful number, since it uses less digits than its factorization.

47213551516221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16247297 (or 16247294 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The spelling of 47213551516221 in words is "forty-seven trillion, two hundred thirteen billion, five hundred fifty-one million, five hundred sixteen thousand, two hundred twenty-one".