221457061332201 has 4 divisors (see below), whose sum is σ = 295276081776272. Its totient is φ = 147638040888132.

The previous prime is 221457061332193. The next prime is 221457061332233. The reversal of 221457061332201 is 102233160754122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 221457061332201 - 2³ = 221457061332193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221457061332201.

It is not an unprimeable number, because it can be changed into a prime (221457061352201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36909510222031 + ... + 36909510222036.

It is an arithmetic number, because the mean of its divisors is an integer number (73819020444068).

Almost surely, 2^{221457061332201} is an apocalyptic number.

It is an amenable number.

221457061332201 is a deficient number, since it is larger than the sum of its proper divisors (73819020444071).

221457061332201 is an equidigital number, since it uses as much as digits as its factorization.

221457061332201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73819020444070.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 221457061332201 in words is "two hundred twenty-one trillion, four hundred fifty-seven billion, sixty-one million, three hundred thirty-two thousand, two hundred one".