221671235330350 has 48 divisors (see below), whose sum is σ = 467394248447280. Its totient is φ = 77540059641600.

The previous prime is 221671235330339. The next prime is 221671235330371. The reversal of 221671235330350 is 53033532176122.

It is a super-2 number, since 2×221671235330350² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221671235330297 and 221671235330306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8974531591 + ... + 8974556290.

It is an arithmetic number, because the mean of its divisors is an integer number (9737380175985).

Almost surely, 2^{221671235330350} is an apocalyptic number.

221671235330350 is an abundant number, since it is smaller than the sum of its proper divisors (245723013116930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221671235330350 is a wasteful number, since it uses less digits than its factorization.

221671235330350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17949087925 (or 17949087920 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 43.

The spelling of 221671235330350 in words is "two hundred twenty-one trillion, six hundred seventy-one billion, two hundred thirty-five million, three hundred thirty thousand, three hundred fifty".