101212 has 6 divisors (see below), whose sum is σ = 177128. Its totient is φ = 50604.

The previous prime is 101209. The next prime is 101221. The reversal of 101212 is 212101.

101212 is nontrivially palindromic in base 12.

101212 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 101195 and 101204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12648 + ... + 12655.

2¹⁰¹²¹² is an apocalyptic number.

It is an amenable number.

101212 is a deficient number, since it is larger than the sum of its proper divisors (75916).

101212 is a wasteful number, since it uses less digits than its factorization.

101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25307 (or 25305 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 101212 is about 318.1383346911. The cubic root of 101212 is about 46.6026560036.

Adding to 101212 its reverse (212101), we get a palindrome (313313).

Subtracting 101212 from its reverse (212101), we obtain a square (110889 = 333²).

It can be divided in two parts, 1012 and 12, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 101212 in words is "one hundred one thousand, two hundred twelve", and thus it is an iban number.