2101207620 has 24 divisors (see below), whose sum is σ = 5883381504. Its totient is φ = 560322016.

The previous prime is 2101207613. The next prime is 2101207627. The reversal of 2101207620 is 267021012.

It is an interprime number because it is at equal distance from previous prime (2101207613) and next prime (2101207627).

It is not an unprimeable number, because it can be changed into a prime (2101207627) 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 7 ways as a sum of consecutive naturals, for example, 17510004 + ... + 17510123.

It is an arithmetic number, because the mean of its divisors is an integer number (245140896).

Almost surely, 2^2101207620 is an apocalyptic number.

2101207620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101207620 is an abundant number, since it is smaller than the sum of its proper divisors (3782173884).

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

2101207620 is a wasteful number, since it uses less digits than its factorization.

2101207620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35020139 (or 35020137 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 2101207620 is about 45838.9312702641. The cubic root of 2101207620 is about 1280.8245866816.

Adding to 2101207620 its reverse (267021012), we get a palindrome (2368228632).

The spelling of 2101207620 in words is "two billion, one hundred one million, two hundred seven thousand, six hundred twenty".