121200010111012 has 48 divisors (see below), whose sum is σ = 247181674481280. Its totient is φ = 50919872620032.

The previous prime is 121200010110961. The next prime is 121200010111073. The reversal of 121200010111012 is 210111010002121.

It is a happy number.

It is a super-2 number, since 2×121200010111012² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121200010110983 and 121200010111001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32640837 + ... + 36163852.

It is an arithmetic number, because the mean of its divisors is an integer number (5149618218360).

Almost surely, 2^{121200010111012} is an apocalyptic number.

It is an amenable number.

121200010111012 is an abundant number, since it is smaller than the sum of its proper divisors (125981664370268).

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

121200010111012 is a wasteful number, since it uses less digits than its factorization.

121200010111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68805940 (or 68805938 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121200010111012 its reverse (210111010002121), we get a palindrome (331311020113133).

The spelling of 121200010111012 in words is "one hundred twenty-one trillion, two hundred billion, ten million, one hundred eleven thousand, twelve".