212211022004 has 24 divisors (see below), whose sum is σ = 371849052288. Its totient is φ = 105968525760.

The previous prime is 212211021949. The next prime is 212211022007. The reversal of 212211022004 is 400220112212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211022007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11108549 + ... + 11127635.

It is an arithmetic number, because the mean of its divisors is an integer number (15493710512).

Almost surely, 2^212211022004 is an apocalyptic number.

It is an amenable number.

212211022004 is a deficient number, since it is larger than the sum of its proper divisors (159638030284).

212211022004 is a wasteful number, since it uses less digits than its factorization.

212211022004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22535 (or 22533 counting only the distinct ones).

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

Adding to 212211022004 its reverse (400220112212), we get a palindrome (612431134216).

The spelling of 212211022004 in words is "two hundred twelve billion, two hundred eleven million, twenty-two thousand, four".