11111210121012 has 12 divisors (see below), whose sum is σ = 25926156949056. Its totient is φ = 3703736707000.

The previous prime is 11111210120981. The next prime is 11111210121029. The reversal of 11111210121012 is 21012101211111.

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

It is a junction number, because it is equal to n+sod(n) for n = 11111210120982 and 11111210121000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462967088364 + ... + 462967088387.

It is an arithmetic number, because the mean of its divisors is an integer number (2160513079088).

Almost surely, 2^{11111210121012} is an apocalyptic number.

11111210121012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11111210121012 is an abundant number, since it is smaller than the sum of its proper divisors (14814946828044).

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

11111210121012 is a wasteful number, since it uses less digits than its factorization.

11111210121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925934176758 (or 925934176756 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11111210121012 its reverse (21012101211111), we get a palindrome (32123311332123).

It can be divided in two parts, 11111 and 210121012, that multiplied together give a palindrome (2334654564332).

The spelling of 11111210121012 in words is "eleven trillion, one hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, twelve".