1121010001321 has 6 divisors (see below), whose sum is σ = 1304032042410. Its totient is φ = 960865715376.

The previous prime is 1121010001303. The next prime is 1121010001337. The reversal of 1121010001321 is 1231000101211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 791316993600 + 329693007721 = 889560^2 + 574189^2 .

It is not a de Polignac number, because 1121010001321 - 2³⁹ = 571254187433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121010001361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11438877516 + ... + 11438877613.

It is an arithmetic number, because the mean of its divisors is an integer number (217338673735).

Almost surely, 2^{1121010001321} is an apocalyptic number.

It is an amenable number.

1121010001321 is a deficient number, since it is larger than the sum of its proper divisors (183022041089).

1121010001321 is an equidigital number, since it uses as much as digits as its factorization.

1121010001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22877755143 (or 22877755136 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1121010001321 its reverse (1231000101211), we get a palindrome (2352010102532).

The spelling of 1121010001321 in words is "one trillion, one hundred twenty-one billion, ten million, one thousand, three hundred twenty-one".