2116331312402 has 4 divisors (see below), whose sum is σ = 3174496968606. Its totient is φ = 1058165656200.

The previous prime is 2116331312399. The next prime is 2116331312467. The reversal of 2116331312402 is 2042131336112.

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

It can be written as a sum of positive squares in only one way, i.e., 1751840192041 + 364491120361 = 1323571^2 + 603731^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529082828099 + ... + 529082828102.

Almost surely, 2^{2116331312402} is an apocalyptic number.

2116331312402 is a deficient number, since it is larger than the sum of its proper divisors (1058165656204).

2116331312402 is a wasteful number, since it uses less digits than its factorization.

2116331312402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058165656203.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 2116331312402 its reverse (2042131336112), we get a palindrome (4158462648514).

The spelling of 2116331312402 in words is "two trillion, one hundred sixteen billion, three hundred thirty-one million, three hundred twelve thousand, four hundred two".