20127122110402 has 16 divisors (see below), whose sum is σ = 30756479943672. Its totient is φ = 9875724145920.

The previous prime is 20127122110397. The next prime is 20127122110411. The reversal of 20127122110402 is 20401122172102.

It can be written as a sum of positive squares in 4 ways, for example, as 2524574609881 + 17602547500521 = 1588891^2 + 4195539^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190451113 + ... + 190556764.

Almost surely, 2^{20127122110402} is an apocalyptic number.

20127122110402 is a deficient number, since it is larger than the sum of its proper divisors (10629357833270).

20127122110402 is a wasteful number, since it uses less digits than its factorization.

20127122110402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381008373.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 20127122110402 its reverse (20401122172102), we get a palindrome (40528244282504).

The spelling of 20127122110402 in words is "twenty trillion, one hundred twenty-seven billion, one hundred twenty-two million, one hundred ten thousand, four hundred two".