2122153555 has 16 divisors (see below), whose sum is σ = 2558651904. Its totient is φ = 1689700320.

The previous prime is 2122153531. The next prime is 2122153559. The reversal of 2122153555 is 5553512212.

It is not a de Polignac number, because 2122153555 - 2¹⁹ = 2121629267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122153559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1135732 + ... + 1137598.

It is an arithmetic number, because the mean of its divisors is an integer number (159915744).

Almost surely, 2^2122153555 is an apocalyptic number.

2122153555 is a deficient number, since it is larger than the sum of its proper divisors (436498349).

2122153555 is a wasteful number, since it uses less digits than its factorization.

2122153555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826.

The product of its digits is 15000, while the sum is 31.

The square root of 2122153555 is about 46066.8379097155. The cubic root of 2122153555 is about 1285.0664987010.

Adding to 2122153555 its reverse (5553512212), we get a palindrome (7675665767).

The spelling of 2122153555 in words is "two billion, one hundred twenty-two million, one hundred fifty-three thousand, five hundred fifty-five".