22121034140421 has 48 divisors (see below), whose sum is σ = 34137940861440. Its totient is φ = 13762003226400.

The previous prime is 22121034140417. The next prime is 22121034140509. The reversal of 22121034140421 is 12404143012122.

22121034140421 is a `hidden beast` number, since 2 + 2 + 1 + 210 + 3 + 41 + 404 + 2 + 1 = 666.

It is not a de Polignac number, because 22121034140421 - 2² = 22121034140417 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121034140411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 380377696 + ... + 380435846.

It is an arithmetic number, because the mean of its divisors is an integer number (711207101280).

Almost surely, 2^{22121034140421} is an apocalyptic number.

It is an amenable number.

22121034140421 is a deficient number, since it is larger than the sum of its proper divisors (12016906721019).

22121034140421 is a wasteful number, since it uses less digits than its factorization.

22121034140421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91446 (or 91443 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 22121034140421 its reverse (12404143012122), we get a palindrome (34525177152543).

The spelling of 22121034140421 in words is "twenty-two trillion, one hundred twenty-one billion, thirty-four million, one hundred forty thousand, four hundred twenty-one".