212021022112 has 48 divisors (see below), whose sum is σ = 431885260800. Its totient is φ = 102337150720.

The previous prime is 212021022067. The next prime is 212021022113. The reversal of 212021022112 is 211220120212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (212021022113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6441537 + ... + 6474367.

It is an arithmetic number, because the mean of its divisors is an integer number (8997609600).

Almost surely, 2^212021022112 is an apocalyptic number.

It is an amenable number.

212021022112 is an abundant number, since it is smaller than the sum of its proper divisors (219864238688).

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

212021022112 is a wasteful number, since it uses less digits than its factorization.

212021022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39829 (or 39821 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212021022112 its reverse (211220120212), we get a palindrome (423241142324).

The spelling of 212021022112 in words is "two hundred twelve billion, twenty-one million, twenty-two thousand, one hundred twelve".