2101021008 has 40 divisors (see below), whose sum is σ = 5429283456. Its totient is φ = 700128000.

The previous prime is 2101020923. The next prime is 2101021009. The reversal of 2101021008 is 8001201012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101021009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290233 + ... + 297383.

Almost surely, 2^2101021008 is an apocalyptic number.

It is an amenable number.

2101021008 is an abundant number, since it is smaller than the sum of its proper divisors (3328262448).

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

2101021008 is a wasteful number, since it uses less digits than its factorization.

2101021008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13283 (or 13277 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 2101021008 is about 45836.8957064066. The cubic root of 2101021008 is about 1280.7866681197.

The spelling of 2101021008 in words is "two billion, one hundred one million, twenty-one thousand, eight".