120213971 has 2 divisors, whose sum is σ = 120213972. Its totient is φ = 120213970.

The previous prime is 120213959. The next prime is 120213997. The reversal of 120213971 is 179312021.

It is an a-pointer prime, because the next prime (120213997) can be obtained adding 120213971 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120213971 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 120213971.

It is not a weakly prime, because it can be changed into another prime (120213941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60106985 + 60106986.

It is an arithmetic number, because the mean of its divisors is an integer number (60106986).

Almost surely, 2^120213971 is an apocalyptic number.

120213971 is a deficient number, since it is larger than the sum of its proper divisors (1).

120213971 is an equidigital number, since it uses as much as digits as its factorization.

120213971 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 120213971 is about 10964.2131956653. The cubic root of 120213971 is about 493.5354062714.

Adding to 120213971 its reverse (179312021), we get a palindrome (299525992).

The spelling of 120213971 in words is "one hundred twenty million, two hundred thirteen thousand, nine hundred seventy-one".