1212011013113 has 4 divisors (see below), whose sum is σ = 1215607485300. Its totient is φ = 1208414540928.

The previous prime is 1212011013107. The next prime is 1212011013121. The reversal of 1212011013113 is 3113101102121.

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 133979425024 + 1078031588089 = 366032^2 + 1038283^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212011013113 - 2⁴ = 1212011013097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212011013091 and 1212011013100.

It is not an unprimeable number, because it can be changed into a prime (1212011013163) 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, 1798235588 + ... + 1798236261.

It is an arithmetic number, because the mean of its divisors is an integer number (303901871325).

Almost surely, 2^{1212011013113} is an apocalyptic number.

It is an amenable number.

1212011013113 is a deficient number, since it is larger than the sum of its proper divisors (3596472187).

1212011013113 is an equidigital number, since it uses as much as digits as its factorization.

1212011013113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596472186.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1212011013113 its reverse (3113101102121), we get a palindrome (4325112115234).

The spelling of 1212011013113 in words is "one trillion, two hundred twelve billion, eleven million, thirteen thousand, one hundred thirteen".