221421255241277 has 48 divisors (see below), whose sum is σ = 283854683185920. Its totient is φ = 171104790987648.

The previous prime is 221421255241223. The next prime is 221421255241301. The reversal of 221421255241277 is 772142552124122.

It is not a de Polignac number, because 221421255241277 - 2³⁰ = 221420181499453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221421255241177) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 420818924 + ... + 421344762.

It is an arithmetic number, because the mean of its divisors is an integer number (5913639233040).

Almost surely, 2^{221421255241277} is an apocalyptic number.

It is an amenable number.

221421255241277 is a deficient number, since it is larger than the sum of its proper divisors (62433427944643).

221421255241277 is a wasteful number, since it uses less digits than its factorization.

221421255241277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541282 (or 541275 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 47.

The spelling of 221421255241277 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, two hundred fifty-five million, two hundred forty-one thousand, two hundred seventy-seven".