221872672503270 has 64 divisors (see below), whose sum is σ = 594464538170880. Its totient is φ = 58885638184800.

The previous prime is 221872672503269. The next prime is 221872672503353. The reversal of 221872672503270 is 72305276278122.

It is a happy number.

221872672503270 is a `hidden beast` number, since 2 + 2 + 1 + 8 + 7 + 2 + 67 + 2 + 503 + 2 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1947219426 + ... + 1947333365.

It is an arithmetic number, because the mean of its divisors is an integer number (9288508408920).

Almost surely, 2^{221872672503270} is an apocalyptic number.

221872672503270 is an abundant number, since it is smaller than the sum of its proper divisors (372591865667610).

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

221872672503270 is a wasteful number, since it uses less digits than its factorization.

221872672503270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894553018 (or 3894553012 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 54.

The spelling of 221872672503270 in words is "two hundred twenty-one trillion, eight hundred seventy-two billion, six hundred seventy-two million, five hundred three thousand, two hundred seventy".