1301000022121 has 4 divisors (see below), whose sum is σ = 1305836453700. Its totient is φ = 1296163590544.

The previous prime is 1301000022097. The next prime is 1301000022187. The reversal of 1301000022121 is 1212200001031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 721786176400 + 579213845721 = 849580^2 + 761061^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301000022121 - 2⁵ = 1301000022089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301000022221) 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, 2418215386 + ... + 2418215923.

It is an arithmetic number, because the mean of its divisors is an integer number (326459113425).

Almost surely, 2^{1301000022121} is an apocalyptic number.

It is an amenable number.

1301000022121 is a deficient number, since it is larger than the sum of its proper divisors (4836431579).

1301000022121 is an equidigital number, since it uses as much as digits as its factorization.

1301000022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4836431578.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1301000022121 its reverse (1212200001031), we get a palindrome (2513200023152).

The spelling of 1301000022121 in words is "one trillion, three hundred one billion, twenty-two thousand, one hundred twenty-one".