102011213 has 4 divisors (see below), whose sum is σ = 102053148. Its totient is φ = 101969280.

The previous prime is 102011207. The next prime is 102011219. The reversal of 102011213 is 312110201.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (102011207) and next prime (102011219).

It can be written as a sum of positive squares in 2 ways, for example, as 27741289 + 74269924 = 5267^2 + 8618^2 .

It is a cyclic number.

It is not a de Polignac number, because 102011213 - 2¹² = 102007117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102011194 and 102011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17078 + ... + 22263.

It is an arithmetic number, because the mean of its divisors is an integer number (25513287).

Almost surely, 2^102011213 is an apocalyptic number.

It is an amenable number.

102011213 is a deficient number, since it is larger than the sum of its proper divisors (41935).

102011213 is an equidigital number, since it uses as much as digits as its factorization.

102011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41934.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 102011213 is about 10100.0600493264. The cubic root of 102011213 is about 467.2499933918.

Adding to 102011213 its reverse (312110201), we get a palindrome (414121414).

The spelling of 102011213 in words is "one hundred two million, eleven thousand, two hundred thirteen".