1212413999 has 16 divisors (see below), whose sum is σ = 1267985664. Its totient is φ = 1157952000.

The previous prime is 1212413953. The next prime is 1212414023. The reversal of 1212413999 is 9993142121.

It is a cyclic number.

It is not a de Polignac number, because 1212413999 - 2²⁰ = 1211365423 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 (1212413399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1856357 + ... + 1857009.

It is an arithmetic number, because the mean of its divisors is an integer number (79249104).

Almost surely, 2^1212413999 is an apocalyptic number.

1212413999 is a deficient number, since it is larger than the sum of its proper divisors (55571665).

1212413999 is a wasteful number, since it uses less digits than its factorization.

1212413999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378.

The product of its digits is 34992, while the sum is 41.

The square root of 1212413999 is about 34819.7357686700. The cubic root of 1212413999 is about 1066.3104059048.

The spelling of 1212413999 in words is "one billion, two hundred twelve million, four hundred thirteen thousand, nine hundred ninety-nine".