211102201200020 has 96 divisors (see below), whose sum is σ = 479251311517440. Its totient is φ = 77645769338880.

The previous prime is 211102201200001. The next prime is 211102201200029. The reversal of 211102201200020 is 20002102201112.

It is a junction number, because it is equal to n+sod(n) for n = 211102201199968 and 211102201200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211102201200029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2115011876 + ... + 2115111684.

It is an arithmetic number, because the mean of its divisors is an integer number (4992201161640).

Almost surely, 2^{211102201200020} is an apocalyptic number.

211102201200020 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 211102201200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239625655758720).

211102201200020 is an abundant number, since it is smaller than the sum of its proper divisors (268149110317420).

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

211102201200020 is a wasteful number, since it uses less digits than its factorization.

211102201200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131025 (or 131023 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211102201200020 its reverse (20002102201112), we get a palindrome (231104303401132).

The spelling of 211102201200020 in words is "two hundred eleven trillion, one hundred two billion, two hundred one million, two hundred thousand, twenty".