212112110011220 has 96 divisors (see below), whose sum is σ = 456768720027648. Its totient is φ = 82700973637632.

The previous prime is 212112110011181. The next prime is 212112110011357. The reversal of 212112110011220 is 22110011211212.

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, 1329334964 + ... + 1329494516.

It is an arithmetic number, because the mean of its divisors is an integer number (4758007500288).

Almost surely, 2^{212112110011220} is an apocalyptic number.

212112110011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112110011220 is an abundant number, since it is smaller than the sum of its proper divisors (244656610016428).

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

212112110011220 is a wasteful number, since it uses less digits than its factorization.

212112110011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165369 (or 165367 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212112110011220 its reverse (22110011211212), we get a palindrome (234222121222432).

The spelling of 212112110011220 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred ten million, eleven thousand, two hundred twenty".