201021222101 has 16 divisors (see below), whose sum is σ = 232173051264. Its totient is φ = 170479033344.

The previous prime is 201021222097. The next prime is 201021222119. The reversal of 201021222101 is 101222120102.

It is a cyclic number.

It is not a de Polignac number, because 201021222101 - 2² = 201021222097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021212101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2453666 + ... + 2534268.

It is an arithmetic number, because the mean of its divisors is an integer number (14510815704).

Almost surely, 2^201021222101 is an apocalyptic number.

It is an amenable number.

201021222101 is a deficient number, since it is larger than the sum of its proper divisors (31151829163).

201021222101 is an equidigital number, since it uses as much as digits as its factorization.

201021222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84380.

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

Adding to 201021222101 its reverse (101222120102), we get a palindrome (302243342203).

The spelling of 201021222101 in words is "two hundred one billion, twenty-one million, two hundred twenty-two thousand, one hundred one".