20110211023 has 16 divisors (see below), whose sum is σ = 23992750080. Its totient is φ = 16480734336.

The previous prime is 20110210999. The next prime is 20110211053. The reversal of 20110211023 is 32011201102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110211023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110210994 and 20110211012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110211053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363298 + ... + 414976.

It is an arithmetic number, because the mean of its divisors is an integer number (1499546880).

Almost surely, 2^20110211023 is an apocalyptic number.

20110211023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20110211023 is a deficient number, since it is larger than the sum of its proper divisors (3882539057).

20110211023 is a wasteful number, since it uses less digits than its factorization.

20110211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54126.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20110211023 its reverse (32011201102), we get a palindrome (52121412125).

The spelling of 20110211023 in words is "twenty billion, one hundred ten million, two hundred eleven thousand, twenty-three".