1211404004 has 12 divisors (see below), whose sum is σ = 2128828800. Its totient is φ = 603167208.

The previous prime is 1211403971. The next prime is 1211404027. The reversal of 1211404004 is 4004041121.

It is a super-3 number, since 3×1211404004³ (a number of 28 digits) contains 333 as substring.

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, 632624 + ... + 634535.

It is an arithmetic number, because the mean of its divisors is an integer number (177402400).

Almost surely, 2^1211404004 is an apocalyptic number.

It is an amenable number.

1211404004 is a deficient number, since it is larger than the sum of its proper divisors (917424796).

1211404004 is a wasteful number, since it uses less digits than its factorization.

1211404004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267402 (or 1267400 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1211404004 is about 34805.2295495950. The cubic root of 1211404004 is about 1066.0142289190.

Adding to 1211404004 its reverse (4004041121), we get a palindrome (5215445125).

The spelling of 1211404004 in words is "one billion, two hundred eleven million, four hundred four thousand, four".