212012122004 has 12 divisors (see below), whose sum is σ = 387152570784. Its totient is φ = 101397101784.

The previous prime is 212012121991. The next prime is 212012122043. The reversal of 212012122004 is 400221210212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152239702 + ... + 1152239885.

It is an arithmetic number, because the mean of its divisors is an integer number (32262714232).

Almost surely, 2^212012122004 is an apocalyptic number.

It is an amenable number.

212012122004 is a deficient number, since it is larger than the sum of its proper divisors (175140448780).

212012122004 is a wasteful number, since it uses less digits than its factorization.

212012122004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304479614 (or 2304479612 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212012122004 its reverse (400221210212), we get a palindrome (612233332216).

The spelling of 212012122004 in words is "two hundred twelve billion, twelve million, one hundred twenty-two thousand, four".