20101101192 has 48 divisors (see below), whose sum is σ = 54498766140. Its totient is φ = 6693193728.

The previous prime is 20101101191. The next prime is 20101101197. The reversal of 20101101192 is 29110110102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18532465956 + 1568635236 = 136134^2 + 39606^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20101101191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81513 + ... + 216440.

Almost surely, 2^20101101192 is an apocalyptic number.

It is an amenable number.

20101101192 is an abundant number, since it is smaller than the sum of its proper divisors (34397664948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101101192 is a wasteful number, since it uses less digits than its factorization.

20101101192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298902 (or 298895 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 20101101192 its reverse (29110110102), we get a palindrome (49211211294).

The spelling of 20101101192 in words is "twenty billion, one hundred one million, one hundred one thousand, one hundred ninety-two".