1201111020012 has 24 divisors (see below), whose sum is σ = 2870948292912. Its totient is φ = 390605209600.

The previous prime is 1201111019993. The next prime is 1201111020013. The reversal of 1201111020012 is 2100201111021.

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 1201111020012.

It is not an unprimeable number, because it can be changed into a prime (1201111020013) 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, 1220640789 + ... + 1220641772.

It is an arithmetic number, because the mean of its divisors is an integer number (119622845538).

Almost surely, 2^{1201111020012} is an apocalyptic number.

1201111020012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201111020012 is an abundant number, since it is smaller than the sum of its proper divisors (1669837272900).

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

1201111020012 is a wasteful number, since it uses less digits than its factorization.

1201111020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441282609 (or 2441282607 counting only the distinct ones).

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

Adding to 1201111020012 its reverse (2100201111021), we get a palindrome (3301312131033).

The spelling of 1201111020012 in words is "one trillion, two hundred one billion, one hundred eleven million, twenty thousand, twelve".