21470546417121 has 6 divisors (see below), whose sum is σ = 31013011491410. Its totient is φ = 14313697611408.

The previous prime is 21470546417053. The next prime is 21470546417141. The reversal of 21470546417121 is 12171464507412.

It is a happy number.

21470546417121 is a `hidden beast` number, since 2 + 1 + 4 + 70 + 5 + 46 + 417 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15723326520225 + 5747219896896 = 3965265^2 + 2397336^2 .

It is not a de Polignac number, because 21470546417121 - 2⁷ = 21470546416993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21470546417141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1192808134276 + ... + 1192808134293.

Almost surely, 2^{21470546417121} is an apocalyptic number.

It is an amenable number.

21470546417121 is a deficient number, since it is larger than the sum of its proper divisors (9542465074289).

21470546417121 is a wasteful number, since it uses less digits than its factorization.

21470546417121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385616268575 (or 2385616268572 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 21470546417121 in words is "twenty-one trillion, four hundred seventy billion, five hundred forty-six million, four hundred seventeen thousand, one hundred twenty-one".