1201211212012 has 24 divisors (see below), whose sum is σ = 2443141451520. Its totient is φ = 506079299280.

The previous prime is 1201211211983. The next prime is 1201211212067. The reversal of 1201211212012 is 2102121121021.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 363561064 + ... + 363564367.

It is an arithmetic number, because the mean of its divisors is an integer number (101797560480).

Almost surely, 2^{1201211212012} is an apocalyptic number.

It is an amenable number.

1201211212012 is an abundant number, since it is smaller than the sum of its proper divisors (1241930239508).

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

1201211212012 is a wasteful number, since it uses less digits than its factorization.

1201211212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727125501 (or 727125499 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1201211212012 its reverse (2102121121021), we get a palindrome (3303332333033).

Subtracting 1201211212012 from its reverse (2102121121021), we obtain a palindrome (900909909009).

The spelling of 1201211212012 in words is "one trillion, two hundred one billion, two hundred eleven million, two hundred twelve thousand, twelve".