1121123133021 has 16 divisors (see below), whose sum is σ = 1515847752000. Its totient is φ = 736980198528.

The previous prime is 1121123132999. The next prime is 1121123133061. The reversal of 1121123133021 is 1203313211211.

It is not a de Polignac number, because 1121123133021 - 2¹⁷ = 1121123001949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121123133061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9092431 + ... + 9214908.

It is an arithmetic number, because the mean of its divisors is an integer number (94740484500).

Almost surely, 2^{1121123133021} is an apocalyptic number.

It is an amenable number.

1121123133021 is a deficient number, since it is larger than the sum of its proper divisors (394724618979).

1121123133021 is a wasteful number, since it uses less digits than its factorization.

1121123133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18307628.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1121123133021 its reverse (1203313211211), we get a palindrome (2324436344232).

The spelling of 1121123133021 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-three million, one hundred thirty-three thousand, twenty-one".