2120102355 has 24 divisors (see below), whose sum is σ = 3945987792. Its totient is φ = 969189312.

The previous prime is 2120102353. The next prime is 2120102357. The reversal of 2120102355 is 5532010212.

It is an interprime number because it is at equal distance from previous prime (2120102353) and next prime (2120102357).

It is not a de Polignac number, because 2120102355 - 2¹ = 2120102353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2120102353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1441512 + ... + 1442981.

It is an arithmetic number, because the mean of its divisors is an integer number (164416158).

Almost surely, 2^2120102355 is an apocalyptic number.

2120102355 is a deficient number, since it is larger than the sum of its proper divisors (1825885437).

2120102355 is a wasteful number, since it uses less digits than its factorization.

2120102355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884515 (or 2884508 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2120102355 is about 46044.5692237423. The cubic root of 2120102355 is about 1284.6523316680.

Adding to 2120102355 its reverse (5532010212), we get a palindrome (7652112567).

The spelling of 2120102355 in words is "two billion, one hundred twenty million, one hundred two thousand, three hundred fifty-five".