121001011111012 has 12 divisors (see below), whose sum is σ = 211752132149376. Its totient is φ = 60500401925480.

The previous prime is 121001011111009. The next prime is 121001011111051. The reversal of 121001011111012 is 210111110100121.

It is a junction number, because it is equal to n+sod(n) for n = 121001011110983 and 121001011111001.

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, 23250064 + ... + 27974407.

It is an arithmetic number, because the mean of its divisors is an integer number (17646011012448).

Almost surely, 2^{121001011111012} is an apocalyptic number.

It is an amenable number.

121001011111012 is a deficient number, since it is larger than the sum of its proper divisors (90751121038364).

121001011111012 is a wasteful number, since it uses less digits than its factorization.

121001011111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51815018 (or 51815016 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 121001011111012 its reverse (210111110100121), we get a palindrome (331112121211133).

The spelling of 121001011111012 in words is "one hundred twenty-one trillion, one billion, eleven million, one hundred eleven thousand, twelve".