2122985436 has 144 divisors (see below), whose sum is σ = 5954497920. Its totient is φ = 583415040.

The previous prime is 2122985401. The next prime is 2122985443. The reversal of 2122985436 is 6345892212.

It is a super-2 number, since 2×2122985436² = 9014134322936220192, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1315366 + ... + 1316978.

It is an arithmetic number, because the mean of its divisors is an integer number (41350680).

Almost surely, 2^2122985436 is an apocalyptic number.

2122985436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122985436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2977248960).

2122985436 is an abundant number, since it is smaller than the sum of its proper divisors (3831512484).

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

2122985436 is a wasteful number, since it uses less digits than its factorization.

2122985436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716 (or 1701 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 2122985436 is about 46075.8660906119. The cubic root of 2122985436 is about 1285.2343914762.

The spelling of 2122985436 in words is "two billion, one hundred twenty-two million, nine hundred eighty-five thousand, four hundred thirty-six".