20110102 has 4 divisors (see below), whose sum is σ = 30165156. Its totient is φ = 10055050.

The previous prime is 20110087. The next prime is 20110109. The reversal of 20110102 is 20101102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027524 + ... + 5027527.

It is an arithmetic number, because the mean of its divisors is an integer number (7541289).

Almost surely, 2^20110102 is an apocalyptic number.

20110102 is a deficient number, since it is larger than the sum of its proper divisors (10055054).

20110102 is a wasteful number, since it uses less digits than its factorization.

20110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055053.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 20110102 is about 4484.4288376559. The cubic root of 20110102 is about 271.9389550868.

Adding to 20110102 its reverse (20101102), we get a palindrome (40211204).

The spelling of 20110102 in words is "twenty million, one hundred ten thousand, one hundred two".