2101001022 has 48 divisors (see below), whose sum is σ = 4602452400. Its totient is φ = 692640000.

The previous prime is 2101001009. The next prime is 2101001029. The reversal of 2101001022 is 2201001012.

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 = 2101000995 and 2101001013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101001029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 671622 + ... + 674742.

It is an arithmetic number, because the mean of its divisors is an integer number (95884425).

Almost surely, 2^2101001022 is an apocalyptic number.

2101001022 is an abundant number, since it is smaller than the sum of its proper divisors (2501451378).

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

2101001022 is a wasteful number, since it uses less digits than its factorization.

2101001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529 (or 3526 counting only the distinct ones).

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

The square root of 2101001022 is about 45836.6776937422. The cubic root of 2101001022 is about 1280.7826069381.

Adding to 2101001022 its reverse (2201001012), we get a palindrome (4302002034).

The spelling of 2101001022 in words is "two billion, one hundred one million, one thousand, twenty-two".