201022211021 has 16 divisors (see below), whose sum is σ = 207356371200. Its totient is φ = 194802744000.

The previous prime is 201022211017. The next prime is 201022211041. The reversal of 201022211021 is 120112220102.

It is a cyclic number.

It is not a de Polignac number, because 201022211021 - 2² = 201022211017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201022210987 and 201022211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022211041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1290956 + ... + 1438266.

It is an arithmetic number, because the mean of its divisors is an integer number (12959773200).

Almost surely, 2^201022211021 is an apocalyptic number.

It is an amenable number.

201022211021 is a deficient number, since it is larger than the sum of its proper divisors (6334160179).

201022211021 is a wasteful number, since it uses less digits than its factorization.

201022211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147700.

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

Adding to 201022211021 its reverse (120112220102), we get a palindrome (321134431123).

The spelling of 201022211021 in words is "two hundred one billion, twenty-two million, two hundred eleven thousand, twenty-one".