1201211010012 has 48 divisors (see below), whose sum is σ = 3023093187072. Its totient is φ = 369032099520.

The previous prime is 1201211010011. The next prime is 1201211010023. The reversal of 1201211010012 is 2100101121021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1201211010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201211010011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5849664 + ... + 6051527.

It is an arithmetic number, because the mean of its divisors is an integer number (62981108064).

Almost surely, 2^{1201211010012} is an apocalyptic number.

1201211010012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201211010012 is an abundant number, since it is smaller than the sum of its proper divisors (1821882177060).

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

1201211010012 is a wasteful number, since it uses less digits than its factorization.

1201211010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11901858 (or 11901856 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1201211010012 its reverse (2100101121021), we get a palindrome (3301312131033).

The spelling of 1201211010012 in words is "one trillion, two hundred one billion, two hundred eleven million, ten thousand, twelve".