101214247 has 4 divisors (see below), whose sum is σ = 102495520. Its totient is φ = 99932976.

The previous prime is 101214241. The next prime is 101214251. The reversal of 101214247 is 742412101.

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

It is a cyclic number.

It is not a de Polignac number, because 101214247 - 2⁷ = 101214119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101214241) 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, 640518 + ... + 640675.

It is an arithmetic number, because the mean of its divisors is an integer number (25623880).

Almost surely, 2^101214247 is an apocalyptic number.

101214247 is a deficient number, since it is larger than the sum of its proper divisors (1281273).

101214247 is an equidigital number, since it uses as much as digits as its factorization.

101214247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281272.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 101214247 is about 10060.5291610332. The cubic root of 101214247 is about 466.0300087511.

Adding to 101214247 its reverse (742412101), we get a palindrome (843626348).

The spelling of 101214247 in words is "one hundred one million, two hundred fourteen thousand, two hundred forty-seven".