120121121012 has 6 divisors (see below), whose sum is σ = 210211961778.
Its totient is φ = 60060560504.
The previous prime is 120121121011. The next prime is 120121121017. The reversal of 120121121012 is 210121121021.
It can be written as a sum of positive squares in only one way, i.e., 85793924836 + 34327196176 = 292906^2 + 185276^2
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (120121121011) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15015140123 + ... + 15015140130.
It is an arithmetic number, because the mean of its divisors is an integer number (35035326963).
Almost surely, 2120121121012 is an apocalyptic number.
It is an amenable number.
120121121012 is a deficient number, since it is larger than the sum of its proper divisors (90090840766).
120121121012 is a wasteful number, since it uses less digits than its factorization.
120121121012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 30030280257 (or 30030280255 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 14.
Adding to 120121121012 its reverse (210121121021), we get a palindrome (330242242033).
Subtracting 120121121012 from its reverse (210121121021), we obtain a palindrome (90000000009).
The spelling of 120121121012 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, twelve".