1211522234004 has 24 divisors (see below), whose sum is σ = 3140983569920. Its totient is φ = 403840744632.

The previous prime is 1211522233981. The next prime is 1211522234009. The reversal of 1211522234004 is 4004322251121.

1211522234004 is a `hidden beast` number, since 1 + 21 + 15 + 2 + 223 + 400 + 4 = 666.

It is a super-2 number, since 2×1211522234004² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211522234009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5608899124 + ... + 5608899339.

Almost surely, 2^{1211522234004} is an apocalyptic number.

It is an amenable number.

1211522234004 is an abundant number, since it is smaller than the sum of its proper divisors (1929461335916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211522234004 is a wasteful number, since it uses less digits than its factorization.

1211522234004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11217798476 (or 11217798468 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 1211522234004 its reverse (4004322251121), we get a palindrome (5215844485125).

The spelling of 1211522234004 in words is "one trillion, two hundred eleven billion, five hundred twenty-two million, two hundred thirty-four thousand, four".