212210102101 has 2 divisors, whose sum is σ = 212210102102. Its totient is φ = 212210102100.

The previous prime is 212210102089. The next prime is 212210102107. The reversal of 212210102101 is 101201012212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162481548100 + 49728554001 = 403090^2 + 222999^2 .

It is a cyclic number.

It is not a de Polignac number, because 212210102101 - 2⁷ = 212210101973 is a prime.

It is a super-2 number, since 2×212210102101² (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 (212210102107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105051050 + 106105051051.

It is an arithmetic number, because the mean of its divisors is an integer number (106105051051).

Almost surely, 2^212210102101 is an apocalyptic number.

It is an amenable number.

212210102101 is a deficient number, since it is larger than the sum of its proper divisors (1).

212210102101 is an equidigital number, since it uses as much as digits as its factorization.

212210102101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212210102101 its reverse (101201012212), we get a palindrome (313411114313).

The spelling of 212210102101 in words is "two hundred twelve billion, two hundred ten million, one hundred two thousand, one hundred one".