201121012400404 has 24 divisors (see below), whose sum is σ = 355193391032480. Its totient is φ = 99637199961696.

The previous prime is 201121012400401. The next prime is 201121012400447. The reversal of 201121012400404 is 404004210121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121012400401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60246139 + ... + 63496765.

Almost surely, 2^{201121012400404} is an apocalyptic number.

It is an amenable number.

201121012400404 is a deficient number, since it is larger than the sum of its proper divisors (154072378632076).

201121012400404 is a wasteful number, since it uses less digits than its factorization.

201121012400404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392647 (or 3392645 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 201121012400404 its reverse (404004210121102), we get a palindrome (605125222521506).

The spelling of 201121012400404 in words is "two hundred one trillion, one hundred twenty-one billion, twelve million, four hundred thousand, four hundred four".