101012213 has 4 divisors (see below), whose sum is σ = 101183148. Its totient is φ = 100841280.

The previous prime is 101012207. The next prime is 101012231. The reversal of 101012213 is 312210101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37920964 + 63091249 = 6158^2 + 7943^2 .

It is a cyclic number.

It is not a de Polignac number, because 101012213 - 2¹⁰ = 101011189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101012194 and 101012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101012243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84578 + ... + 85763.

It is an arithmetic number, because the mean of its divisors is an integer number (25295787).

Almost surely, 2^101012213 is an apocalyptic number.

It is an amenable number.

101012213 is a deficient number, since it is larger than the sum of its proper divisors (170935).

101012213 is an equidigital number, since it uses as much as digits as its factorization.

101012213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170934.

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

The square root of 101012213 is about 10050.4832222137. The cubic root of 101012213 is about 465.7197209998.

Adding to 101012213 its reverse (312210101), we get a palindrome (413222314).

The spelling of 101012213 in words is "one hundred one million, twelve thousand, two hundred thirteen".