2120729550 has 48 divisors (see below), whose sum is σ = 5268412800. Its totient is φ = 564559840.

The previous prime is 2120729543. The next prime is 2120729563. The reversal of 2120729550 is 559270212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78049 + ... + 101651.

It is an arithmetic number, because the mean of its divisors is an integer number (109758600).

Almost surely, 2^2120729550 is an apocalyptic number.

2120729550 is an abundant number, since it is smaller than the sum of its proper divisors (3147683250).

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

2120729550 is a wasteful number, since it uses less digits than its factorization.

2120729550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24217 (or 24212 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 2120729550 is about 46051.3794581661. The cubic root of 2120729550 is about 1284.7789997786.

Adding to 2120729550 its reverse (559270212), we get a palindrome (2679999762).

The spelling of 2120729550 in words is "two billion, one hundred twenty million, seven hundred twenty-nine thousand, five hundred fifty".