20020123111110 has 16 divisors (see below), whose sum is σ = 48048295466736. Its totient is φ = 5338699496288.

The previous prime is 20020123111103. The next prime is 20020123111111. The reversal of 20020123111110 is 1111132102002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20020123111110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020123111111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333668718489 + ... + 333668718548.

It is an arithmetic number, because the mean of its divisors is an integer number (3003018466671).

Almost surely, 2^{20020123111110} is an apocalyptic number.

20020123111110 is an abundant number, since it is smaller than the sum of its proper divisors (28028172355626).

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

20020123111110 is a wasteful number, since it uses less digits than its factorization.

20020123111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667337437047.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 20020123111110 its reverse (1111132102002), we get a palindrome (21131255213112).

The spelling of 20020123111110 in words is "twenty trillion, twenty billion, one hundred twenty-three million, one hundred eleven thousand, one hundred ten".