302012021 has 8 divisors (see below), whose sum is σ = 320241240. Its totient is φ = 283834368.

The previous prime is 302011999. The next prime is 302012033. The reversal of 302012021 is 120210203.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10797796 + 291214225 = 3286^2 + 17065^2 .

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 302012021 - 2¹⁰ = 302010997 is a prime.

It is a super-2 number, since 2×302012021² = 182422521657008882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 302011993 and 302012011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302812021) 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 7 ways as a sum of consecutive naturals, for example, 476 + ... + 24581.

It is an arithmetic number, because the mean of its divisors is an integer number (40030155).

Almost surely, 2^302012021 is an apocalyptic number.

It is an amenable number.

302012021 is a deficient number, since it is larger than the sum of its proper divisors (18229219).

302012021 is a wasteful number, since it uses less digits than its factorization.

302012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25783.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 302012021 is about 17378.4930589508. The cubic root of 302012021 is about 670.9261869627.

Adding to 302012021 its reverse (120210203), we get a palindrome (422222224).

The spelling of 302012021 in words is "three hundred two million, twelve thousand, twenty-one".