211212202022 has 4 divisors (see below), whose sum is σ = 316818303036. Its totient is φ = 105606101010.

The previous prime is 211212201989. The next prime is 211212202027. The reversal of 211212202022 is 220202212112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×211212202022² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212202027) 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 as a sum of consecutive naturals, namely, 52803050504 + ... + 52803050507.

It is an arithmetic number, because the mean of its divisors is an integer number (79204575759).

Almost surely, 2^211212202022 is an apocalyptic number.

211212202022 is a deficient number, since it is larger than the sum of its proper divisors (105606101014).

211212202022 is a wasteful number, since it uses less digits than its factorization.

211212202022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105606101013.

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

Adding to 211212202022 its reverse (220202212112), we get a palindrome (431414414134).

The spelling of 211212202022 in words is "two hundred eleven billion, two hundred twelve million, two hundred two thousand, twenty-two".