201001001022 has 24 divisors (see below), whose sum is σ = 435616832664. Its totient is φ = 66982693104.

The previous prime is 201001000939. The next prime is 201001001023. The reversal of 201001001022 is 220100100102.

201001001022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 201001000995 and 201001001013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001001023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1399693 + ... + 1536600.

It is an arithmetic number, because the mean of its divisors is an integer number (18150701361).

Almost surely, 2^201001001022 is an apocalyptic number.

201001001022 is an abundant number, since it is smaller than the sum of its proper divisors (234615831642).

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

201001001022 is a wasteful number, since it uses less digits than its factorization.

201001001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940104 (or 2940101 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201001001022 its reverse (220100100102), we get a palindrome (421101101124).

It can be divided in two parts, 20100100102 and 2, that multiplied together give a palindrome (40200200204).

The spelling of 201001001022 in words is "two hundred one billion, one million, one thousand, twenty-two".