221012320995 has 48 divisors (see below), whose sum is σ = 384627391200. Its totient is φ = 117400002048.

The previous prime is 221012320973. The next prime is 221012321009. The reversal of 221012320995 is 599023210122.

It is not a de Polignac number, because 221012320995 - 2¹³ = 221012312803 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47537431 + ... + 47542079.

It is an arithmetic number, because the mean of its divisors is an integer number (8013070650).

Almost surely, 2^221012320995 is an apocalyptic number.

221012320995 is a deficient number, since it is larger than the sum of its proper divisors (163615070205).

221012320995 is a wasteful number, since it uses less digits than its factorization.

221012320995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8676 (or 8673 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 221012320995 in words is "two hundred twenty-one billion, twelve million, three hundred twenty thousand, nine hundred ninety-five".