212212120101 has 4 divisors (see below), whose sum is σ = 282949493472. Its totient is φ = 141474746732.

The previous prime is 212212120013. The next prime is 212212120121. The reversal of 212212120101 is 101021212212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212212120101 - 2²⁹ = 211675249189 is a prime.

It is a super-2 number, since 2×212212120101² (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 (212212120121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35368686681 + ... + 35368686686.

It is an arithmetic number, because the mean of its divisors is an integer number (70737373368).

Almost surely, 2^212212120101 is an apocalyptic number.

It is an amenable number.

212212120101 is a deficient number, since it is larger than the sum of its proper divisors (70737373371).

212212120101 is an equidigital number, since it uses as much as digits as its factorization.

212212120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70737373370.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212212120101 its reverse (101021212212), we get a palindrome (313233332313).

The spelling of 212212120101 in words is "two hundred twelve billion, two hundred twelve million, one hundred twenty thousand, one hundred one".