201021222001211 has 8 divisors (see below), whose sum is σ = 201050300384640. Its totient is φ = 200992145461632.

The previous prime is 201021222001121. The next prime is 201021222001213. The reversal of 201021222001211 is 112100222120102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201021222001211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201021222001211.

It is not an unprimeable number, because it can be changed into a prime (201021222001213) 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, 225551555 + ... + 226441043.

It is an arithmetic number, because the mean of its divisors is an integer number (25131287548080).

Almost surely, 2^{201021222001211} is an apocalyptic number.

201021222001211 is a deficient number, since it is larger than the sum of its proper divisors (29078383429).

201021222001211 is a wasteful number, since it uses less digits than its factorization.

201021222001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921925.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201021222001211 its reverse (112100222120102), we get a palindrome (313121444121313).

The spelling of 201021222001211 in words is "two hundred one trillion, twenty-one billion, two hundred twenty-two million, one thousand, two hundred eleven".