1101122451111 has 4 divisors (see below), whose sum is σ = 1468163268152. Its totient is φ = 734081634072.

The previous prime is 1101122451073. The next prime is 1101122451131. The reversal of 1101122451111 is 1111542211011.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1101122451111 - 2¹⁹ = 1101121926823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101122451131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183520408516 + ... + 183520408521.

It is an arithmetic number, because the mean of its divisors is an integer number (367040817038).

Almost surely, 2^{1101122451111} is an apocalyptic number.

1101122451111 is a deficient number, since it is larger than the sum of its proper divisors (367040817041).

1101122451111 is an equidigital number, since it uses as much as digits as its factorization.

1101122451111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367040817040.

The product of its (nonzero) digits is 80, while the sum is 21.

Adding to 1101122451111 its reverse (1111542211011), we get a palindrome (2212664662122).

The spelling of 1101122451111 in words is "one trillion, one hundred one billion, one hundred twenty-two million, four hundred fifty-one thousand, one hundred eleven".