102213971 has 2 divisors, whose sum is σ = 102213972. Its totient is φ = 102213970.

The previous prime is 102213961. The next prime is 102214003. The reversal of 102213971 is 179312201.

It is a weak prime.

It is an emirp because it is prime and its reverse (179312201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102213971 - 2¹⁴ = 102197587 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102213971.

It is not a weakly prime, because it can be changed into another prime (102213931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106985 + 51106986.

It is an arithmetic number, because the mean of its divisors is an integer number (51106986).

Almost surely, 2^102213971 is an apocalyptic number.

102213971 is a deficient number, since it is larger than the sum of its proper divisors (1).

102213971 is an equidigital number, since it uses as much as digits as its factorization.

102213971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 102213971 is about 10110.0925317229. The cubic root of 102213971 is about 467.5593579963.

The spelling of 102213971 in words is "one hundred two million, two hundred thirteen thousand, nine hundred seventy-one".