212120111220000 has 240 divisors, whose sum is σ = 732417255329760. Its totient is φ = 53588238336000.

The previous prime is 212120111219963. The next prime is 212120111220023. The reversal of 212120111220000 is 22111021212.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 91895137 + ... + 94175136.

It is an arithmetic number, because the mean of its divisors is an integer number (3051738563874).

Almost surely, 2^{212120111220000} is an apocalyptic number.

212120111220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212120111220000 is an abundant number, since it is smaller than the sum of its proper divisors (520297144109760).

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

212120111220000 is a wasteful number, since it uses less digits than its factorization.

212120111220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186070325 (or 186070302 counting only the distinct ones).

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

Adding to 212120111220000 its reverse (22111021212), we get a palindrome (212142222241212).

The spelling of 212120111220000 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred eleven million, two hundred twenty thousand".