101213213 has 4 divisors (see below), whose sum is σ = 102872508. Its totient is φ = 99553920.

The previous prime is 101213207. The next prime is 101213227. The reversal of 101213213 is 312312101.

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 58415449 + 42797764 = 7643^2 + 6542^2 .

It is a cyclic number.

It is not a de Polignac number, because 101213213 - 2¹² = 101209117 is a prime.

It is a super-2 number, since 2×101213213² = 20488228971566738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101213243) 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, 829556 + ... + 829677.

It is an arithmetic number, because the mean of its divisors is an integer number (25718127).

Almost surely, 2^101213213 is an apocalyptic number.

It is an amenable number.

101213213 is a deficient number, since it is larger than the sum of its proper divisors (1659295).

101213213 is an equidigital number, since it uses as much as digits as its factorization.

101213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659294.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 101213213 is about 10060.4777719550. The cubic root of 101213213 is about 466.0284217654.

Adding to 101213213 its reverse (312312101), we get a palindrome (413525314).

The spelling of 101213213 in words is "one hundred one million, two hundred thirteen thousand, two hundred thirteen".