119864551221 has 32 divisors (see below), whose sum is σ = 187096965120. Its totient is φ = 75693234672.

The previous prime is 119864551187. The next prime is 119864551253. The reversal of 119864551221 is 122155468911.

119864551221 is a `hidden beast` number, since 1 + 1 + 98 + 6 + 4 + 551 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 119864551221 - 2⁹ = 119864550709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119864551291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 873021 + ... + 1000946.

It is an arithmetic number, because the mean of its divisors is an integer number (5846780160).

Almost surely, 2^119864551221 is an apocalyptic number.

It is an amenable number.

119864551221 is a deficient number, since it is larger than the sum of its proper divisors (67232413899).

119864551221 is a wasteful number, since it uses less digits than its factorization.

119864551221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874102 (or 1874096 counting only the distinct ones).

The product of its digits is 172800, while the sum is 45.

The spelling of 119864551221 in words is "one hundred nineteen billion, eight hundred sixty-four million, five hundred fifty-one thousand, two hundred twenty-one".