10111121001012 has 12 divisors (see below), whose sum is σ = 23592615669056. Its totient is φ = 3370373667000.

The previous prime is 10111121000989. The next prime is 10111121001017. The reversal of 10111121001012 is 21010012111101.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 842593416751 = 10111121001012 / (1 + 0 + 1 + 1 + 1 + 1 + 2 + 1 + 0 + 0 + 1 + 0 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111121001017) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 421296708364 + ... + 421296708387.

Almost surely, 2^{10111121001012} is an apocalyptic number.

10111121001012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10111121001012 is an abundant number, since it is smaller than the sum of its proper divisors (13481494668044).

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

10111121001012 is a wasteful number, since it uses less digits than its factorization.

10111121001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842593416758 (or 842593416756 counting only the distinct ones).

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

Adding to 10111121001012 its reverse (21010012111101), we get a palindrome (31121133112113).

The spelling of 10111121001012 in words is "ten trillion, one hundred eleven billion, one hundred twenty-one million, one thousand, twelve".