1210669999 has 12 divisors (see below), whose sum is σ = 1536361128. Its totient is φ = 943378800.

The previous prime is 1210669997. The next prime is 1210670003. The reversal of 1210669999 is 9999660121.

It is not a de Polignac number, because 1210669999 - 2¹ = 1210669997 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 (1210669991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1122532 + ... + 1123609.

It is an arithmetic number, because the mean of its divisors is an integer number (128030094).

Almost surely, 2^1210669999 is an apocalyptic number.

1210669999 is a deficient number, since it is larger than the sum of its proper divisors (325691129).

1210669999 is a wasteful number, since it uses less digits than its factorization.

1210669999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246166 (or 2246159 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 52.

The square root of 1210669999 is about 34794.6834875675. The cubic root of 1210669999 is about 1065.7988815868.

The spelling of 1210669999 in words is "one billion, two hundred ten million, six hundred sixty-nine thousand, nine hundred ninety-nine".