121111202111012 has 12 divisors (see below), whose sum is σ = 211952605110540. Its totient is φ = 60553314936576.

The previous prime is 121111202110967. The next prime is 121111202111071. The reversal of 121111202111012 is 210111202111121.

121111202111012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22884589358656 + 98226612752356 = 4783784^2 + 9910934^2 .

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, 571410533 + ... + 571622444.

It is an arithmetic number, because the mean of its divisors is an integer number (17662717092545).

Almost surely, 2^{121111202111012} is an apocalyptic number.

It is an amenable number.

121111202111012 is a deficient number, since it is larger than the sum of its proper divisors (90841402999528).

121111202111012 is a wasteful number, since it uses less digits than its factorization.

121111202111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143059470 (or 1143059468 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121111202111012 its reverse (210111202111121), we get a palindrome (331222404222133).

The spelling of 121111202111012 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred two million, one hundred eleven thousand, twelve".