101214391 has 2 divisors, whose sum is σ = 101214392. Its totient is φ = 101214390.

The previous prime is 101214383. The next prime is 101214409. The reversal of 101214391 is 193412101.

It is a weak prime.

It is an emirp because it is prime and its reverse (193412101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101214391 - 2³ = 101214383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101214331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50607195 + 50607196.

It is an arithmetic number, because the mean of its divisors is an integer number (50607196).

Almost surely, 2^101214391 is an apocalyptic number.

101214391 is a deficient number, since it is larger than the sum of its proper divisors (1).

101214391 is an equidigital number, since it uses as much as digits as its factorization.

101214391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 101214391 is about 10060.5363177119. The cubic root of 101214391 is about 466.0302297617.

Adding to 101214391 its reverse (193412101), we get a palindrome (294626492).

The spelling of 101214391 in words is "one hundred one million, two hundred fourteen thousand, three hundred ninety-one".