2090121012 has 144 divisors (see below), whose sum is σ = 6209781760. Its totient is φ = 580447296.

The previous prime is 2090120969. The next prime is 2090121013. The reversal of 2090121012 is 2101210902.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2090121013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1333053 + ... + 1334619.

Almost surely, 2^2090121012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2090121012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3104890880).

2090121012 is an abundant number, since it is smaller than the sum of its proper divisors (4119660748).

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

2090121012 is a wasteful number, since it uses less digits than its factorization.

2090121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730 (or 1725 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 2090121012 is about 45717.8412876199. The cubic root of 2090121012 is about 1278.5679402432.

Adding to 2090121012 its reverse (2101210902), we get a palindrome (4191331914).

The spelling of 2090121012 in words is "two billion, ninety million, one hundred twenty-one thousand, twelve".