1214211999 has 64 divisors (see below), whose sum is σ = 2243985408. Its totient is φ = 563414400.

The previous prime is 1214211899. The next prime is 1214212019. The reversal of 1214211999 is 9991124121.

It is not a de Polignac number, because 1214211999 - 2⁷ = 1214211871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214211199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86572 + ... + 99614.

It is an arithmetic number, because the mean of its divisors is an integer number (35062272).

Almost surely, 2^1214211999 is an apocalyptic number.

1214211999 is a deficient number, since it is larger than the sum of its proper divisors (1029773409).

1214211999 is a wasteful number, since it uses less digits than its factorization.

1214211999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13108.

The product of its digits is 11664, while the sum is 39.

The square root of 1214211999 is about 34845.5448945773. The cubic root of 1214211999 is about 1066.8372554100.

The spelling of 1214211999 in words is "one billion, two hundred fourteen million, two hundred eleven thousand, nine hundred ninety-nine".