212122031120 has 80 divisors (see below), whose sum is σ = 500492520000. Its totient is φ = 83600100864.

The previous prime is 212122031119. The next prime is 212122031183. The reversal of 212122031120 is 21130221212.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1492931 + ... + 1628829.

It is an arithmetic number, because the mean of its divisors is an integer number (6256156500).

Almost surely, 2^212122031120 is an apocalyptic number.

212122031120 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 212122031120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250246260000).

212122031120 is an abundant number, since it is smaller than the sum of its proper divisors (288370488880).

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

212122031120 is a wasteful number, since it uses less digits than its factorization.

212122031120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136200 (or 136194 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212122031120 its reverse (21130221212), we get a palindrome (233252252332).

The spelling of 212122031120 in words is "two hundred twelve billion, one hundred twenty-two million, thirty-one thousand, one hundred twenty".