201021101022 has 16 divisors (see below), whose sum is σ = 459476802432. Its totient is φ = 57434600280.

The previous prime is 201021100979. The next prime is 201021101027. The reversal of 201021101022 is 220101120102.

It is a junction number, because it is equal to n+sod(n) for n = 201021100989 and 201021101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021101027) 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, 2393108304 + ... + 2393108387.

It is an arithmetic number, because the mean of its divisors is an integer number (28717300152).

Almost surely, 2^201021101022 is an apocalyptic number.

201021101022 is an abundant number, since it is smaller than the sum of its proper divisors (258455701410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201021101022 is a wasteful number, since it uses less digits than its factorization.

201021101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4786216703.

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

Adding to 201021101022 its reverse (220101120102), we get a palindrome (421122221124).

The spelling of 201021101022 in words is "two hundred one billion, twenty-one million, one hundred one thousand, twenty-two".