1101551102 has 4 divisors (see below), whose sum is σ = 1652326656. Its totient is φ = 550775550.

The previous prime is 1101551089. The next prime is 1101551123. The reversal of 1101551102 is 2011551011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2011551011 = 2819 ⋅713569.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275387774 + ... + 275387777.

It is an arithmetic number, because the mean of its divisors is an integer number (413081664).

Almost surely, 2^1101551102 is an apocalyptic number.

1101551102 is a deficient number, since it is larger than the sum of its proper divisors (550775554).

1101551102 is an equidigital number, since it uses as much as digits as its factorization.

1101551102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550775553.

The product of its (nonzero) digits is 50, while the sum is 17.

The square root of 1101551102 is about 33189.6234085294. The cubic root of 1101551102 is about 1032.7650911353.

Subtracting 1101551102 from its reverse (2011551011), we obtain a palindrome (909999909).

The spelling of 1101551102 in words is "one billion, one hundred one million, five hundred fifty-one thousand, one hundred two".