1201111101012 has 24 divisors (see below), whose sum is σ = 2855471675616. Its totient is φ = 392816208928.

The previous prime is 1201111100983. The next prime is 1201111101037. The reversal of 1201111101012 is 2101011111021.

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

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 944269098 + ... + 944270369.

It is an arithmetic number, because the mean of its divisors is an integer number (118977986484).

Almost surely, 2^{1201111101012} is an apocalyptic number.

1201111101012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201111101012 is an abundant number, since it is smaller than the sum of its proper divisors (1654360574604).

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

1201111101012 is a wasteful number, since it uses less digits than its factorization.

1201111101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888539527 (or 1888539525 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1201111101012 its reverse (2101011111021), we get a palindrome (3302122212033).

The spelling of 1201111101012 in words is "one trillion, two hundred one billion, one hundred eleven million, one hundred one thousand, twelve".