2120401355 has 8 divisors (see below), whose sum is σ = 2555403552. Its totient is φ = 1689039808.

The previous prime is 2120401321. The next prime is 2120401379. The reversal of 2120401355 is 5531040212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120401355 - 2¹² = 2120397259 is a prime.

It is a super-2 number, since 2×2120401355² = 8992203812571672050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120401355.

It is an unprimeable number.

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, 908879 + ... + 911208.

It is an arithmetic number, because the mean of its divisors is an integer number (319425444).

Almost surely, 2^2120401355 is an apocalyptic number.

2120401355 is a deficient number, since it is larger than the sum of its proper divisors (435002197).

2120401355 is a wasteful number, since it uses less digits than its factorization.

2120401355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820325.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2120401355 is about 46047.8159634092. The cubic root of 2120401355 is about 1284.7127207322.

Adding to 2120401355 its reverse (5531040212), we get a palindrome (7651441567).

The spelling of 2120401355 in words is "two billion, one hundred twenty million, four hundred one thousand, three hundred fifty-five".