121111203012 has 12 divisors (see below), whose sum is σ = 282592807056. Its totient is φ = 40370401000.

The previous prime is 121111202983. The next prime is 121111203047. The reversal of 121111203012 is 210302111121.

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 = 121111202982 and 121111203000.

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, 5046300114 + ... + 5046300137.

It is an arithmetic number, because the mean of its divisors is an integer number (23549400588).

Almost surely, 2^121111203012 is an apocalyptic number.

121111203012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121111203012 is an abundant number, since it is smaller than the sum of its proper divisors (161481604044).

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

121111203012 is a wasteful number, since it uses less digits than its factorization.

121111203012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10092600258 (or 10092600256 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121111203012 its reverse (210302111121), we get a palindrome (331413314133).

The spelling of 121111203012 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred three thousand, twelve".