221312457106 has 16 divisors (see below), whose sum is σ = 357532459200. Its totient is φ = 102136290768.

The previous prime is 221312457097. The next prime is 221312457137. The reversal of 221312457106 is 601754213122.

221312457106 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18705 + ... + 665563.

It is an arithmetic number, because the mean of its divisors is an integer number (22345778700).

Almost surely, 2^221312457106 is an apocalyptic number.

221312457106 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

221312457106 is a deficient number, since it is larger than the sum of its proper divisors (136220002094).

221312457106 is a wasteful number, since it uses less digits than its factorization.

221312457106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660033.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 221312457106 in words is "two hundred twenty-one billion, three hundred twelve million, four hundred fifty-seven thousand, one hundred six".