2121150888 has 112 divisors (see below), whose sum is σ = 6005488500. Its totient is φ = 702017280.

The previous prime is 2121150887. The next prime is 2121150901. The reversal of 2121150888 is 8880511212.

It can be written as a sum of positive squares in 2 ways, for example, as 1715450724 + 405700164 = 41418^2 + 20142^2 .

It is a super-4 number, since 4×2121150888⁴ (a number of 38 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2121150881) 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 27 ways as a sum of consecutive naturals, for example, 867748 + ... + 870188.

Almost surely, 2^2121150888 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 2121150888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3002744250).

2121150888 is an abundant number, since it is smaller than the sum of its proper divisors (3884337612).

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

2121150888 is a wasteful number, since it uses less digits than its factorization.

2121150888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614 (or 2595 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 36.

The square root of 2121150888 is about 46055.9538822072. The cubic root of 2121150888 is about 1284.8640790490.

The spelling of 2121150888 in words is "two billion, one hundred twenty-one million, one hundred fifty thousand, eight hundred eighty-eight".