12012011101121 has 4 divisors (see below), whose sum is σ = 12426218380500. Its totient is φ = 11597803821744.

The previous prime is 12012011101099. The next prime is 12012011101141. The reversal of 12012011101121 is 12110111021021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8020586500096 + 3991424601025 = 2832064^2 + 1997855^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012011101121 - 2²² = 12012006906817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012011101096 and 12012011101105.

It is not an unprimeable number, because it can be changed into a prime (12012011101141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207103639646 + ... + 207103639703.

It is an arithmetic number, because the mean of its divisors is an integer number (3106554595125).

Almost surely, 2^{12012011101121} is an apocalyptic number.

It is an amenable number.

12012011101121 is a deficient number, since it is larger than the sum of its proper divisors (414207279379).

12012011101121 is an equidigital number, since it uses as much as digits as its factorization.

12012011101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414207279378.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12012011101121 its reverse (12110111021021), we get a palindrome (24122122122142).

The spelling of 12012011101121 in words is "twelve trillion, twelve billion, eleven million, one hundred one thousand, one hundred twenty-one".