1212049999 has 2 divisors, whose sum is σ = 1212050000. Its totient is φ = 1212049998.

The previous prime is 1212049963. The next prime is 1212050083. The reversal of 1212049999 is 9999402121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212049999 - 2⁷ = 1212049871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212049099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606024999 + 606025000.

It is an arithmetic number, because the mean of its divisors is an integer number (606025000).

Almost surely, 2^1212049999 is an apocalyptic number.

1212049999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212049999 is an equidigital number, since it uses as much as digits as its factorization.

1212049999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 1212049999 is about 34814.5084555276. The cubic root of 1212049999 is about 1066.2036833282.

The spelling of 1212049999 in words is "one billion, two hundred twelve million, forty-nine thousand, nine hundred ninety-nine".