2112261555 has 8 divisors (see below), whose sum is σ = 3379618512. Its totient is φ = 1126539488.

The previous prime is 2112261517. The next prime is 2112261607. The reversal of 2112261555 is 5551622112.

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 2112261555 - 2⁶ = 2112261491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70408704 + ... + 70408733.

It is an arithmetic number, because the mean of its divisors is an integer number (422452314).

Almost surely, 2^2112261555 is an apocalyptic number.

2112261555 is a deficient number, since it is larger than the sum of its proper divisors (1267356957).

2112261555 is a wasteful number, since it uses less digits than its factorization.

2112261555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140817445.

The product of its digits is 6000, while the sum is 30.

The square root of 2112261555 is about 45959.3467642872. The cubic root of 2112261555 is about 1283.0666936152.

Adding to 2112261555 its reverse (5551622112), we get a palindrome (7663883667).

The spelling of 2112261555 in words is "two billion, one hundred twelve million, two hundred sixty-one thousand, five hundred fifty-five".