21101011201 has 8 divisors (see below), whose sum is σ = 22343537664. Its totient is φ = 19858628160.

The previous prime is 21101011193. The next prime is 21101011219. The reversal of 21101011201 is 10211010112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21101011201 - 2³ = 21101011193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101011271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475696 + ... + 518158.

It is an arithmetic number, because the mean of its divisors is an integer number (2792942208).

Almost surely, 2^21101011201 is an apocalyptic number.

It is an amenable number.

21101011201 is a deficient number, since it is larger than the sum of its proper divisors (1242526463).

21101011201 is a wasteful number, since it uses less digits than its factorization.

21101011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71711.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21101011201 its reverse (10211010112), we get a palindrome (31312021313).

The spelling of 21101011201 in words is "twenty-one billion, one hundred one million, eleven thousand, two hundred one".