20211110102124 has 120 divisors (see below), whose sum is σ = 53643271152240. Its totient is φ = 6634600068096.

The previous prime is 20211110102077. The next prime is 20211110102143. The reversal of 20211110102124 is 42120101111202.

It is a super-2 number, since 2×20211110102124² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20211110102097 and 20211110102106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7216612 + ... + 9617780.

It is an arithmetic number, because the mean of its divisors is an integer number (447027259602).

Almost surely, 2^{20211110102124} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20211110102124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26821635576120).

20211110102124 is an abundant number, since it is smaller than the sum of its proper divisors (33432161050116).

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

20211110102124 is a wasteful number, since it uses less digits than its factorization.

20211110102124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401581 (or 2401570 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20211110102124 its reverse (42120101111202), we get a palindrome (62331211213326).

The spelling of 20211110102124 in words is "twenty trillion, two hundred eleven billion, one hundred ten million, one hundred two thousand, one hundred twenty-four".