221005426246 has 24 divisors (see below), whose sum is σ = 364413597912. Its totient is φ = 100449122400.

The previous prime is 221005426219. The next prime is 221005426253. The reversal of 221005426246 is 642624500122.

It is a super-2 number, since 2×221005426246² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3978241 + ... + 4033411.

It is an arithmetic number, because the mean of its divisors is an integer number (15183899913).

Almost surely, 2^221005426246 is an apocalyptic number.

221005426246 is a deficient number, since it is larger than the sum of its proper divisors (143408171666).

221005426246 is a wasteful number, since it uses less digits than its factorization.

221005426246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71748 (or 71737 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 221005426246 its reverse (642624500122), we get a palindrome (863629926368).

The spelling of 221005426246 in words is "two hundred twenty-one billion, five million, four hundred twenty-six thousand, two hundred forty-six".