1211142104 has 16 divisors (see below), whose sum is σ = 2288774400. Its totient is φ = 600802272.

The previous prime is 1211142077. The next prime is 1211142113. The reversal of 1211142104 is 4012411121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595019 + ... + 597050.

It is an arithmetic number, because the mean of its divisors is an integer number (143048400).

Almost surely, 2^1211142104 is an apocalyptic number.

It is an amenable number.

1211142104 is a deficient number, since it is larger than the sum of its proper divisors (1077632296).

1211142104 is a wasteful number, since it uses less digits than its factorization.

1211142104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192202 (or 1192198 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1211142104 is about 34801.4669805743. The cubic root of 1211142104 is about 1065.9374009167.

Adding to 1211142104 its reverse (4012411121), we get a palindrome (5223553225).

The spelling of 1211142104 in words is "one billion, two hundred eleven million, one hundred forty-two thousand, one hundred four".