1212104666572 has 24 divisors (see below), whose sum is σ = 2143858752000. Its totient is φ = 599588682000.

The previous prime is 1212104666561. The next prime is 1212104666579. The reversal of 1212104666572 is 2756664012121.

It is not an unprimeable number, because it can be changed into a prime (1212104666579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1564072 + ... + 2206927.

It is an arithmetic number, because the mean of its divisors is an integer number (89327448000).

Almost surely, 2^{1212104666572} is an apocalyptic number.

It is an amenable number.

1212104666572 is a deficient number, since it is larger than the sum of its proper divisors (931754085428).

1212104666572 is a wasteful number, since it uses less digits than its factorization.

1212104666572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771861 (or 3771859 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

Adding to 1212104666572 its reverse (2756664012121), we get a palindrome (3968768678693).

The spelling of 1212104666572 in words is "one trillion, two hundred twelve billion, one hundred four million, six hundred sixty-six thousand, five hundred seventy-two".