1310021121 has 8 divisors (see below), whose sum is σ = 1767739680. Its totient is φ = 862824992.

The previous prime is 1310021117. The next prime is 1310021137. The reversal of 1310021121 is 1211200131.

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 1310021121 - 2² = 1310021117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1310021097 and 1310021106.

It is not an unprimeable number, because it can be changed into a prime (1310021021) 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, 2630316 + ... + 2630813.

It is an arithmetic number, because the mean of its divisors is an integer number (220967460).

Almost surely, 2^1310021121 is an apocalyptic number.

It is an amenable number.

1310021121 is a deficient number, since it is larger than the sum of its proper divisors (457718559).

1310021121 is an equidigital number, since it uses as much as digits as its factorization.

1310021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261215.

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

The square root of 1310021121 is about 36194.2139160391. The cubic root of 1310021121 is about 1094.1900618063.

Adding to 1310021121 its reverse (1211200131), we get a palindrome (2521221252).

The spelling of 1310021121 in words is "one billion, three hundred ten million, twenty-one thousand, one hundred twenty-one".