211202212112120 has 128 divisors (see below), whose sum is σ = 497150671248000. Its totient is φ = 80598517063680.

The previous prime is 211202212112081. The next prime is 211202212112147. The reversal of 211202212112120 is 21211212202112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 211202212112092 and 211202212112101.

It is a congruent number.

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, 2855551940 + ... + 2855625900.

It is an arithmetic number, because the mean of its divisors is an integer number (3883989619125).

Almost surely, 2^{211202212112120} is an apocalyptic number.

211202212112120 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 211202212112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248575335624000).

211202212112120 is an abundant number, since it is smaller than the sum of its proper divisors (285948459135880).

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

211202212112120 is a wasteful number, since it uses less digits than its factorization.

211202212112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81993 (or 81989 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211202212112120 its reverse (21211212202112), we get a palindrome (232413424314232).

The spelling of 211202212112120 in words is "two hundred eleven trillion, two hundred two billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty".