20112131400202 has 16 divisors (see below), whose sum is σ = 30810376933632. Its totient is φ = 9842009968240.

The previous prime is 20112131400161. The next prime is 20112131400253. The reversal of 20112131400202 is 20200413121102.

It is a super-2 number, since 2×20112131400202² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20112131400202.

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, 9060363 + ... + 11059585.

It is an arithmetic number, because the mean of its divisors is an integer number (1925648558352).

Almost surely, 2^{20112131400202} is an apocalyptic number.

20112131400202 is a deficient number, since it is larger than the sum of its proper divisors (10698245533430).

20112131400202 is a wasteful number, since it uses less digits than its factorization.

20112131400202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106293.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20112131400202 its reverse (20200413121102), we get a palindrome (40312544521304).

The spelling of 20112131400202 in words is "twenty trillion, one hundred twelve billion, one hundred thirty-one million, four hundred thousand, two hundred two".