212101001222 has 16 divisors (see below), whose sum is σ = 348514516944. Its totient is φ = 96009504000.

The previous prime is 212101001219. The next prime is 212101001239. The reversal of 212101001222 is 222100101212.

It is a junction number, because it is equal to n+sod(n) for n = 212101001197 and 212101001206.

It is a congruent number.

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, 19996679 + ... + 20007282.

It is an arithmetic number, because the mean of its divisors is an integer number (21782157309).

Almost surely, 2^212101001222 is an apocalyptic number.

212101001222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212101001222 is a deficient number, since it is larger than the sum of its proper divisors (136413515722).

212101001222 is a wasteful number, since it uses less digits than its factorization.

212101001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40004215.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212101001222 its reverse (222100101212), we get a palindrome (434201102434).

The spelling of 212101001222 in words is "two hundred twelve billion, one hundred one million, one thousand, two hundred twenty-two".