20200120122136 has 16 divisors (see below), whose sum is σ = 37956328502040. Its totient is φ = 10078432521600.

The previous prime is 20200120122101. The next prime is 20200120122137. The reversal of 20200120122136 is 63122102100202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200120122137) 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, 2703438465 + ... + 2703445936.

Almost surely, 2^{20200120122136} is an apocalyptic number.

It is an amenable number.

20200120122136 is a deficient number, since it is larger than the sum of its proper divisors (17756208379904).

20200120122136 is a wasteful number, since it uses less digits than its factorization.

20200120122136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406884874 (or 5406884870 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20200120122136 its reverse (63122102100202), we get a palindrome (83322222222338).

The spelling of 20200120122136 in words is "twenty trillion, two hundred billion, one hundred twenty million, one hundred twenty-two thousand, one hundred thirty-six".