1313121302121 has 16 divisors (see below), whose sum is σ = 1827007277184. Its totient is φ = 837327093504.

The previous prime is 1313121302081. The next prime is 1313121302183. The reversal of 1313121302121 is 1212031213131.

It is not a de Polignac number, because 1313121302121 - 2²² = 1313117107817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313121302021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2124465 + ... + 2672001.

It is an arithmetic number, because the mean of its divisors is an integer number (114187954824).

Almost surely, 2^{1313121302121} is an apocalyptic number.

It is an amenable number.

1313121302121 is a deficient number, since it is larger than the sum of its proper divisors (513885975063).

1313121302121 is a wasteful number, since it uses less digits than its factorization.

1313121302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582320.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1313121302121 its reverse (1212031213131), we get a palindrome (2525152515252).

The spelling of 1313121302121 in words is "one trillion, three hundred thirteen billion, one hundred twenty-one million, three hundred two thousand, one hundred twenty-one".