201022101021 has 8 divisors (see below), whose sum is σ = 306319392064. Its totient is φ = 114869772000.

The previous prime is 201022101017. The next prime is 201022101047. The reversal of 201022101021 is 120101220102.

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

It is not a de Polignac number, because 201022101021 - 2² = 201022101017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201022100988 and 201022101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022101011) 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 7 ways as a sum of consecutive naturals, for example, 4786240480 + ... + 4786240521.

It is an arithmetic number, because the mean of its divisors is an integer number (38289924008).

Almost surely, 2^201022101021 is an apocalyptic number.

201022101021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201022101021 is a deficient number, since it is larger than the sum of its proper divisors (105297291043).

201022101021 is an equidigital number, since it uses as much as digits as its factorization.

201022101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9572481011.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201022101021 its reverse (120101220102), we get a palindrome (321123321123).

The spelling of 201022101021 in words is "two hundred one billion, twenty-two million, one hundred one thousand, twenty-one".