2102402423122 has 4 divisors (see below), whose sum is σ = 3153603634686. Its totient is φ = 1051201211560.

The previous prime is 2102402423119. The next prime is 2102402423153. The reversal of 2102402423122 is 2213242042012.

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., 1985813637721 + 116588785401 = 1409189^2 + 341451^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525600605779 + ... + 525600605782.

Almost surely, 2^{2102402423122} is an apocalyptic number.

2102402423122 is a deficient number, since it is larger than the sum of its proper divisors (1051201211564).

2102402423122 is a wasteful number, since it uses less digits than its factorization.

2102402423122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051201211563.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 2102402423122 its reverse (2213242042012), we get a palindrome (4315644465134).

It can be divided in two parts, 210240 and 2423122, that added together give a palindrome (2633362).

The spelling of 2102402423122 in words is "two trillion, one hundred two billion, four hundred two million, four hundred twenty-three thousand, one hundred twenty-two".