1211422004 has 12 divisors (see below), whose sum is σ = 2283064644. Its totient is φ = 559117824.

The previous prime is 1211421979. The next prime is 1211422019. The reversal of 1211422004 is 4002241121.

It can be written as a sum of positive squares in 2 ways, for example, as 345885604 + 865536400 = 18598^2 + 29420^2 .

It is a super-3 number, since 3×1211422004³ (a number of 28 digits) contains 333 as substring.

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, 11648237 + ... + 11648340.

It is an arithmetic number, because the mean of its divisors is an integer number (190255387).

Almost surely, 2^1211422004 is an apocalyptic number.

It is an amenable number.

1211422004 is a deficient number, since it is larger than the sum of its proper divisors (1071642640).

1211422004 is a wasteful number, since it uses less digits than its factorization.

1211422004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23296594 (or 23296592 counting only the distinct ones).

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

The square root of 1211422004 is about 34805.4881304659. The cubic root of 1211422004 is about 1066.0195087874.

Adding to 1211422004 its reverse (4002241121), we get a palindrome (5213663125).

The spelling of 1211422004 in words is "one billion, two hundred eleven million, four hundred twenty-two thousand, four".