221222119977 has 32 divisors (see below), whose sum is σ = 349511702400. Its totient is φ = 137807391744.

The previous prime is 221222119969. The next prime is 221222119981. The reversal of 221222119977 is 779911222122.

221222119977 is a `hidden beast` number, since 221 + 222 + 119 + 97 + 7 = 666.

221222119977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221222119977 - 2³ = 221222119969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221222119907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1669888 + ... + 1797489.

It is an arithmetic number, because the mean of its divisors is an integer number (10922240700).

Almost surely, 2^221222119977 is an apocalyptic number.

221222119977 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

221222119977 is a deficient number, since it is larger than the sum of its proper divisors (128289582423).

221222119977 is a wasteful number, since it uses less digits than its factorization.

221222119977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467542 (or 3467536 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The spelling of 221222119977 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred nineteen thousand, nine hundred seventy-seven".