201121120021004 has 72 divisors (see below), whose sum is σ = 363183197885760. Its totient is φ = 97448170659840.

The previous prime is 201121120021001. The next prime is 201121120021007. The reversal of 201121120021004 is 400120021121102.

201121120021004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201121120021001) and next prime (201121120021007).

It is not an unprimeable number, because it can be changed into a prime (201121120021001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3089907692 + ... + 3089972780.

Almost surely, 2^{201121120021004} is an apocalyptic number.

It is an amenable number.

201121120021004 is a deficient number, since it is larger than the sum of its proper divisors (162062077864756).

201121120021004 is a wasteful number, since it uses less digits than its factorization.

201121120021004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68259 (or 68216 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201121120021004 its reverse (400120021121102), we get a palindrome (601241141142106).

The spelling of 201121120021004 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty million, twenty-one thousand, four".