2155442231132 has 12 divisors (see below), whose sum is σ = 3873970496760. Its totient is φ = 1048593517776.

The previous prime is 2155442231051. The next prime is 2155442231147. The reversal of 2155442231132 is 2311322445512.

It is a super-2 number, since 2×2155442231132² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2155442231092 and 2155442231101.

It is a congruent number.

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, 7281899282 + ... + 7281899577.

It is an arithmetic number, because the mean of its divisors is an integer number (322830874730).

Almost surely, 2^{2155442231132} is an apocalyptic number.

It is an amenable number.

2155442231132 is a deficient number, since it is larger than the sum of its proper divisors (1718528265628).

2155442231132 is a wasteful number, since it uses less digits than its factorization.

2155442231132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14563798900 (or 14563798898 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

Adding to 2155442231132 its reverse (2311322445512), we get a palindrome (4466764676644).

The spelling of 2155442231132 in words is "two trillion, one hundred fifty-five billion, four hundred forty-two million, two hundred thirty-one thousand, one hundred thirty-two".