1123102213021 has 8 divisors (see below), whose sum is σ = 1135743959160. Its totient is φ = 1110460969728.

The previous prime is 1123102213019. The next prime is 1123102213081. The reversal of 1123102213021 is 1203122013211.

It can be written as a sum of positive squares in 4 ways, for example, as 107564320900 + 1015537892121 = 327970^2 + 1007739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123102213021 - 2¹ = 1123102213019 is a prime.

It is a super-2 number, since 2×1123102213021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123102213021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123102213081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6079995 + ... + 6261991.

It is an arithmetic number, because the mean of its divisors is an integer number (141967994895).

Almost surely, 2^{1123102213021} is an apocalyptic number.

It is an amenable number.

1123102213021 is a deficient number, since it is larger than the sum of its proper divisors (12641746139).

1123102213021 is an equidigital number, since it uses as much as digits as its factorization.

1123102213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251423.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1123102213021 its reverse (1203122013211), we get a palindrome (2326224226232).

The spelling of 1123102213021 in words is "one trillion, one hundred twenty-three billion, one hundred two million, two hundred thirteen thousand, twenty-one".