302012121 has 4 divisors (see below), whose sum is σ = 402682832. Its totient is φ = 201341412.

The previous prime is 302012063. The next prime is 302012131. The reversal of 302012121 is 121210203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121210203 = 3 ⋅40403401.

It is not a de Polignac number, because 302012121 - 2¹⁰ = 302011097 is a prime.

It is a super-2 number, since 2×302012121² = 182422642461837282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 302012097 and 302012106.

It is not an unprimeable number, because it can be changed into a prime (302012131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50335351 + ... + 50335356.

It is an arithmetic number, because the mean of its divisors is an integer number (100670708).

Almost surely, 2^302012121 is an apocalyptic number.

It is an amenable number.

302012121 is a deficient number, since it is larger than the sum of its proper divisors (100670711).

302012121 is a wasteful number, since it uses less digits than its factorization.

302012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100670710.

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

The square root of 302012121 is about 17378.4959360700. The cubic root of 302012121 is about 670.9262610134.

Adding to 302012121 its reverse (121210203), we get a palindrome (423222324).

The spelling of 302012121 in words is "three hundred two million, twelve thousand, one hundred twenty-one".