1103331132021 has 4 divisors (see below), whose sum is σ = 1471108176032. Its totient is φ = 735554088012.

The previous prime is 1103331132017. The next prime is 1103331132023. The reversal of 1103331132021 is 1202311333011.

It is a happy number.

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.

It is not a de Polignac number, because 1103331132021 - 2² = 1103331132017 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 (1103331132023) 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, 183888522001 + ... + 183888522006.

It is an arithmetic number, because the mean of its divisors is an integer number (367777044008).

Almost surely, 2^{1103331132021} is an apocalyptic number.

It is an amenable number.

1103331132021 is a deficient number, since it is larger than the sum of its proper divisors (367777044011).

1103331132021 is an equidigital number, since it uses as much as digits as its factorization.

1103331132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367777044010.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1103331132021 its reverse (1202311333011), we get a palindrome (2305642465032).

The spelling of 1103331132021 in words is "one trillion, one hundred three billion, three hundred thirty-one million, one hundred thirty-two thousand, twenty-one".