1302020121 has 8 divisors (see below), whose sum is σ = 1782946624. Its totient is φ = 844553520.

The previous prime is 1302020113. The next prime is 1302020143. The reversal of 1302020121 is 1210202031.

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

It is not a de Polignac number, because 1302020121 - 2³ = 1302020113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1302020097 and 1302020106.

It is not an unprimeable number, because it can be changed into a prime (1302020171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5864845 + ... + 5865066.

It is an arithmetic number, because the mean of its divisors is an integer number (222868328).

Almost surely, 2^1302020121 is an apocalyptic number.

It is an amenable number.

1302020121 is a deficient number, since it is larger than the sum of its proper divisors (480926503).

1302020121 is a wasteful number, since it uses less digits than its factorization.

1302020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11729951.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1302020121 is about 36083.5159179368. The cubic root of 1302020121 is about 1091.9579098954.

Adding to 1302020121 its reverse (1210202031), we get a palindrome (2512222152).

The spelling of 1302020121 in words is "one billion, three hundred two million, twenty thousand, one hundred twenty-one".