217062201021 has 8 divisors (see below), whose sum is σ = 289427312160. Its totient is φ = 144702611952.

The previous prime is 217062200989. The next prime is 217062201043. The reversal of 217062201021 is 120102260712.

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

It is not a de Polignac number, because 217062201021 - 2⁵ = 217062200989 is a prime.

It is a super-2 number, since 2×217062201021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 217062200982 and 217062201000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217062205021) 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, 1287910 + ... + 1446663.

It is an arithmetic number, because the mean of its divisors is an integer number (36178414020).

Almost surely, 2^217062201021 is an apocalyptic number.

It is an amenable number.

217062201021 is a deficient number, since it is larger than the sum of its proper divisors (72365111139).

217062201021 is a wasteful number, since it uses less digits than its factorization.

217062201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761035.

The product of its (nonzero) digits is 672, while the sum is 24.

Adding to 217062201021 its reverse (120102260712), we get a palindrome (337164461733).

The spelling of 217062201021 in words is "two hundred seventeen billion, sixty-two million, two hundred one thousand, twenty-one".