21103332201 has 36 divisors (see below), whose sum is σ = 35958821184. Its totient is φ = 11889183600.

The previous prime is 21103332193. The next prime is 21103332233. The reversal of 21103332201 is 10223330112.

21103332201 is a `hidden beast` number, since 2 + 110 + 333 + 220 + 1 = 666.

It is not a de Polignac number, because 21103332201 - 2³ = 21103332193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21103332401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 305685 + ... + 368306.

It is an arithmetic number, because the mean of its divisors is an integer number (998856144).

Almost surely, 2^21103332201 is an apocalyptic number.

21103332201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21103332201 is a deficient number, since it is larger than the sum of its proper divisors (14855488983).

21103332201 is a wasteful number, since it uses less digits than its factorization.

21103332201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674082 (or 674072 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21103332201 its reverse (10223330112), we get a palindrome (31326662313).

The spelling of 21103332201 in words is "twenty-one billion, one hundred three million, three hundred thirty-two thousand, two hundred one".