22121000004104 has 16 divisors (see below), whose sum is σ = 42259457555820. Its totient is φ = 10851811322560.

The previous prime is 22121000004073. The next prime is 22121000004113. The reversal of 22121000004104 is 40140000012122.

It can be written as a sum of positive squares in 2 ways, for example, as 19158986901604 + 2962013102500 = 4377098^2 + 1721050^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 26086084487 + ... + 26086085334.

Almost surely, 2^{22121000004104} is an apocalyptic number.

It is an amenable number.

22121000004104 is a deficient number, since it is larger than the sum of its proper divisors (20138457551716).

22121000004104 is a wasteful number, since it uses less digits than its factorization.

22121000004104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52172169880 (or 52172169876 counting only the distinct ones).

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

Adding to 22121000004104 its reverse (40140000012122), we get a palindrome (62261000016226).

The spelling of 22121000004104 in words is "twenty-two trillion, one hundred twenty-one billion, four thousand, one hundred four".