221455262626260 has 48 divisors (see below), whose sum is σ = 667772791921536. Its totient is φ = 54512064646272.

The previous prime is 221455262626121. The next prime is 221455262626271. The reversal of 221455262626260 is 62626262554122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141958500904 + ... + 141958502463.

It is an arithmetic number, because the mean of its divisors is an integer number (13911933165032).

Almost surely, 2^{221455262626260} is an apocalyptic number.

221455262626260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221455262626260 is an abundant number, since it is smaller than the sum of its proper divisors (446317529295276).

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

221455262626260 is a wasteful number, since it uses less digits than its factorization.

221455262626260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283917003392 (or 283917003390 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 51.

The spelling of 221455262626260 in words is "two hundred twenty-one trillion, four hundred fifty-five billion, two hundred sixty-two million, six hundred twenty-six thousand, two hundred sixty".