20111102000 has 160 divisors (see below), whose sum is σ = 56171029824. Its totient is φ = 6882816000.

The previous prime is 20111101991. The next prime is 20111102023. The reversal of 20111102000 is 20111102.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347114 + ... + 400886.

Almost surely, 2^20111102000 is an apocalyptic number.

20111102000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111102000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28085514912).

20111102000 is an abundant number, since it is smaller than the sum of its proper divisors (36059927824).

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

20111102000 is a wasteful number, since it uses less digits than its factorization.

20111102000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53824 (or 53808 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20111102000 its reverse (20111102), we get a palindrome (20131213102).

20111102000 divided by its reverse (20111102) gives a cube (1000 = 10³).

It can be divided in two parts, 2011 and 1102000, that added together give a palindrome (1104011).

The spelling of 20111102000 in words is "twenty billion, one hundred eleven million, one hundred two thousand".