201021102104 has 32 divisors (see below), whose sum is σ = 399318368400. Its totient is φ = 94543088640.

The previous prime is 201021102103. The next prime is 201021102187. The reversal of 201021102104 is 401201120102.

It is a happy number.

201021102104 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201021102104² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021102101) 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, 195374 + ... + 663485.

Almost surely, 2^201021102104 is an apocalyptic number.

It is an amenable number.

201021102104 is a deficient number, since it is larger than the sum of its proper divisors (198297266296).

201021102104 is a wasteful number, since it uses less digits than its factorization.

201021102104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860603 (or 860599 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201021102104 its reverse (401201120102), we get a palindrome (602222222206).

The spelling of 201021102104 in words is "two hundred one billion, twenty-one million, one hundred two thousand, one hundred four".