221211020111108 has 12 divisors (see below), whose sum is σ = 387120185804352. Its totient is φ = 110605252738440.

The previous prime is 221211020111069. The next prime is 221211020111117. The reversal of 221211020111108 is 801111020112122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62388488 + ... + 65838783.

It is an arithmetic number, because the mean of its divisors is an integer number (32260015483696).

Almost surely, 2^{221211020111108} is an apocalyptic number.

It is an amenable number.

221211020111108 is a deficient number, since it is larger than the sum of its proper divisors (165909165693244).

221211020111108 is a wasteful number, since it uses less digits than its factorization.

221211020111108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128658562 (or 128658560 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 23.

The spelling of 221211020111108 in words is "two hundred twenty-one trillion, two hundred eleven billion, twenty million, one hundred eleven thousand, one hundred eight".