21010022201 has 8 divisors (see below), whose sum is σ = 24045712704. Its totient is φ = 17982896400.

The previous prime is 21010022197. The next prime is 21010022213. The reversal of 21010022201 is 10222001012.

It is a happy number.

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

It is not a de Polignac number, because 21010022201 - 2² = 21010022197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21010022291) 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, 2135915 + ... + 2145728.

It is an arithmetic number, because the mean of its divisors is an integer number (3005714088).

Almost surely, 2^21010022201 is an apocalyptic number.

It is an amenable number.

21010022201 is a deficient number, since it is larger than the sum of its proper divisors (3035690503).

21010022201 is an equidigital number, since it uses as much as digits as its factorization.

21010022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282351.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21010022201 its reverse (10222001012), we get a palindrome (31232023213).

The spelling of 21010022201 in words is "twenty-one billion, ten million, twenty-two thousand, two hundred one".