20110102110178 has 4 divisors (see below), whose sum is σ = 30165153165270. Its totient is φ = 10055051055088.

The previous prime is 20110102110101. The next prime is 20110102110179. The reversal of 20110102110178 is 87101120101102.

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., 10642646962249 + 9467455147929 = 3262307^2 + 3076923^2 .

It is not an unprimeable number, because it can be changed into a prime (20110102110179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027525527543 + ... + 5027525527546.

Almost surely, 2^{20110102110178} is an apocalyptic number.

20110102110178 is a deficient number, since it is larger than the sum of its proper divisors (10055051055092).

20110102110178 is a wasteful number, since it uses less digits than its factorization.

20110102110178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10055051055091.

The product of its (nonzero) digits is 224, while the sum is 25.

The spelling of 20110102110178 in words is "twenty trillion, one hundred ten billion, one hundred two million, one hundred ten thousand, one hundred seventy-eight".