212111210012022 has 64 divisors (see below), whose sum is σ = 486567548160000. Its totient is φ = 68422380484320.

The previous prime is 212111210012021. The next prime is 212111210012033. The reversal of 212111210012022 is 220210012111212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212111210011986 and 212111210012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111210012021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220066953 + ... + 221028699.

It is an arithmetic number, because the mean of its divisors is an integer number (7602617940000).

Almost surely, 2^{212111210012022} is an apocalyptic number.

212111210012022 is an abundant number, since it is smaller than the sum of its proper divisors (274456338147978).

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

212111210012022 is a wasteful number, since it uses less digits than its factorization.

212111210012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093538 (or 1093532 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212111210012022 its reverse (220210012111212), we get a palindrome (432321222123234).

The spelling of 212111210012022 in words is "two hundred twelve trillion, one hundred eleven billion, two hundred ten million, twelve thousand, twenty-two".