212001022122112 has 64 divisors (see below), whose sum is σ = 424883876840640. Its totient is φ = 105363527224320.

The previous prime is 212001022122089. The next prime is 212001022122121. The reversal of 212001022122112 is 211221220100212.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×212001022122112² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212001022122112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493619787 + ... + 1493761717.

It is an arithmetic number, because the mean of its divisors is an integer number (6638810575635).

Almost surely, 2^{212001022122112} is an apocalyptic number.

It is an amenable number.

212001022122112 is an abundant number, since it is smaller than the sum of its proper divisors (212882854718528).

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

212001022122112 is a wasteful number, since it uses less digits than its factorization.

212001022122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211989 (or 211977 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212001022122112 its reverse (211221220100212), we get a palindrome (423222242222324).

The spelling of 212001022122112 in words is "two hundred twelve trillion, one billion, twenty-two million, one hundred twenty-two thousand, one hundred twelve".