1302121001 has 12 divisors (see below), whose sum is σ = 1391004720. Its totient is φ = 1218630720.

The previous prime is 1302120971. The next prime is 1302121027. The reversal of 1302121001 is 1001212031.

It is a de Polignac number, because none of the positive numbers 2^k-1302121001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1302121061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39146 + ... + 64316.

It is an arithmetic number, because the mean of its divisors is an integer number (115917060).

Almost surely, 2^1302121001 is an apocalyptic number.

It is an amenable number.

1302121001 is a deficient number, since it is larger than the sum of its proper divisors (88883719).

1302121001 is a wasteful number, since it uses less digits than its factorization.

1302121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25384 (or 25367 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1302121001 is about 36084.9137590767. The cubic root of 1302121001 is about 1091.9861106549.

Adding to 1302121001 its reverse (1001212031), we get a palindrome (2303333032).

The spelling of 1302121001 in words is "one billion, three hundred two million, one hundred twenty-one thousand, one".