66200215522122 has 96 divisors (see below), whose sum is σ = 157559244111360. Its totient is φ = 19921879618560.

The previous prime is 66200215522099. The next prime is 66200215522141. The reversal of 66200215522122 is 22122551200266.

66200215522122 is a `hidden beast` number, since 6 + 6 + 2 + 0 + 0 + 2 + 1 + 5 + 522 + 122 = 666.

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, 16226098 + ... + 19891874.

It is an arithmetic number, because the mean of its divisors is an integer number (1641242126160).

Almost surely, 2^{66200215522122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66200215522122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78779622055680).

66200215522122 is an abundant number, since it is smaller than the sum of its proper divisors (91359028589238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66200215522122 is a wasteful number, since it uses less digits than its factorization.

66200215522122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666428 (or 3666425 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 66200215522122 its reverse (22122551200266), we get a palindrome (88322766722388).

The spelling of 66200215522122 in words is "sixty-six trillion, two hundred billion, two hundred fifteen million, five hundred twenty-two thousand, one hundred twenty-two".