1105121401 has 4 divisors (see below), whose sum is σ = 1105650000. Its totient is φ = 1104592804.

The previous prime is 1105121393. The next prime is 1105121417. The reversal of 1105121401 is 1041215011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1041215011 = 31 ⋅33587581.

It is a cyclic number.

It is not a de Polignac number, because 1105121401 - 2³ = 1105121393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105121471) 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, 261151 + ... + 265348.

It is an arithmetic number, because the mean of its divisors is an integer number (276412500).

Almost surely, 2^1105121401 is an apocalyptic number.

It is an amenable number.

1105121401 is a deficient number, since it is larger than the sum of its proper divisors (528599).

1105121401 is an equidigital number, since it uses as much as digits as its factorization.

1105121401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528598.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1105121401 is about 33243.3662705810. The cubic root of 1105121401 is about 1033.8796720929.

Adding to 1105121401 its reverse (1041215011), we get a palindrome (2146336412).

The spelling of 1105121401 in words is "one billion, one hundred five million, one hundred twenty-one thousand, four hundred one".