2101220516 has 12 divisors (see below), whose sum is σ = 3681422640. Its totient is φ = 1049385480.

The previous prime is 2101220489. The next prime is 2101220533. The reversal of 2101220516 is 6150221012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302330 + ... + 309201.

It is an arithmetic number, because the mean of its divisors is an integer number (306785220).

Almost surely, 2^2101220516 is an apocalyptic number.

It is an amenable number.

2101220516 is a deficient number, since it is larger than the sum of its proper divisors (1580202124).

2101220516 is a wasteful number, since it uses less digits than its factorization.

2101220516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612394 (or 612392 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2101220516 is about 45839.0719365041. The cubic root of 2101220516 is about 1280.8272069970.

Adding to 2101220516 its reverse (6150221012), we get a palindrome (8251441528).

The spelling of 2101220516 in words is "two billion, one hundred one million, two hundred twenty thousand, five hundred sixteen".