201022222121001 has 64 divisors (see below), whose sum is σ = 318965550969600. Its totient is φ = 124680995712000.

The previous prime is 201022222120999. The next prime is 201022222121047. The reversal of 201022222121001 is 100121222220102.

It is a happy number.

201022222121001 is a `hidden beast` number, since 2 + 0 + 10 + 222 + 221 + 210 + 0 + 1 = 666.

It is not a de Polignac number, because 201022222121001 - 2¹ = 201022222120999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201022222121051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25193631 + ... + 32198811.

It is an arithmetic number, because the mean of its divisors is an integer number (4983836733900).

Almost surely, 2^{201022222121001} is an apocalyptic number.

It is an amenable number.

201022222121001 is a deficient number, since it is larger than the sum of its proper divisors (117943328848599).

201022222121001 is a wasteful number, since it uses less digits than its factorization.

201022222121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7005927 (or 7005921 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201022222121001 its reverse (100121222220102), we get a palindrome (301143444341103).

The spelling of 201022222121001 in words is "two hundred one trillion, twenty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, one".