212222102101 has 2 divisors, whose sum is σ = 212222102102. Its totient is φ = 212222102100.

The previous prime is 212222102077. The next prime is 212222102123. The reversal of 212222102101 is 101201222212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189042344100 + 23179758001 = 434790^2 + 152249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212222102101 is a prime.

It is a super-2 number, since 2×212222102101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212222102161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111051050 + 106111051051.

It is an arithmetic number, because the mean of its divisors is an integer number (106111051051).

Almost surely, 2^212222102101 is an apocalyptic number.

It is an amenable number.

212222102101 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222102101 is an equidigital number, since it uses as much as digits as its factorization.

212222102101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212222102101 its reverse (101201222212), we get a palindrome (313423324313).

The spelling of 212222102101 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred two thousand, one hundred one".