1214999971 has 4 divisors (see below), whose sum is σ = 1217602152. Its totient is φ = 1212397792.

The previous prime is 1214999953. The next prime is 1214999977. The reversal of 1214999971 is 1799994121.

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 1214999971 - 2¹⁹ = 1214475683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214999977) 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, 1300390 + ... + 1301323.

It is an arithmetic number, because the mean of its divisors is an integer number (304400538).

Almost surely, 2^1214999971 is an apocalyptic number.

1214999971 is a deficient number, since it is larger than the sum of its proper divisors (2602181).

1214999971 is an equidigital number, since it uses as much as digits as its factorization.

1214999971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602180.

The product of its digits is 367416, while the sum is 52.

The square root of 1214999971 is about 34856.8496998796. The cubic root of 1214999971 is about 1067.0679828573.

The spelling of 1214999971 in words is "one billion, two hundred fourteen million, nine hundred ninety-nine thousand, nine hundred seventy-one".