212013212101 has 2 divisors, whose sum is σ = 212013212102. Its totient is φ = 212013212100.

The previous prime is 212013212087. The next prime is 212013212113. The reversal of 212013212101 is 101212310212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142106380900 + 69906831201 = 376970^2 + 264399^2 .

It is a cyclic number.

It is not a de Polignac number, because 212013212101 - 2⁷ = 212013211973 is a prime.

It is a super-2 number, since 2×212013212101² (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 (212013212171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006606050 + 106006606051.

It is an arithmetic number, because the mean of its divisors is an integer number (106006606051).

Almost surely, 2^212013212101 is an apocalyptic number.

It is an amenable number.

212013212101 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013212101 is an equidigital number, since it uses as much as digits as its factorization.

212013212101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212013212101 its reverse (101212310212), we get a palindrome (313225522313).

The spelling of 212013212101 in words is "two hundred twelve billion, thirteen million, two hundred twelve thousand, one hundred one".