211020122112 has 96 divisors (see below), whose sum is σ = 568905573600. Its totient is φ = 69549522944.

The previous prime is 211020122083. The next prime is 211020122113. The reversal of 211020122112 is 211221020112.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 211020122091 and 211020122100.

It is not an unprimeable number, because it can be changed into a prime (211020122113) 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, 353863 + ... + 739769.

It is an arithmetic number, because the mean of its divisors is an integer number (5926099725).

Almost surely, 2^211020122112 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 211020122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284452786800).

211020122112 is an abundant number, since it is smaller than the sum of its proper divisors (357885451488).

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

211020122112 is an equidigital number, since it uses as much as digits as its factorization.

211020122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386021 (or 386001 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211020122112 its reverse (211221020112), we get a palindrome (422241142224).

The spelling of 211020122112 in words is "two hundred eleven billion, twenty million, one hundred twenty-two thousand, one hundred twelve".