3023212121 has 4 divisors (see below), whose sum is σ = 3096949044. Its totient is φ = 2949475200.

The previous prime is 3023212111. The next prime is 3023212141. The reversal of 3023212121 is 1212123203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1428008521 + 1595203600 = 37789^2 + 39940^2 .

It is a cyclic number.

It is not a de Polignac number, because 3023212121 - 2¹⁰ = 3023211097 is a prime.

It is a super-2 number, since 2×3023212121² = 18279623057122637282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3023212121.

It is not an unprimeable number, because it can be changed into a prime (3023212111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36868400 + ... + 36868481.

It is an arithmetic number, because the mean of its divisors is an integer number (774237261).

Almost surely, 2^3023212121 is an apocalyptic number.

It is an amenable number.

3023212121 is a deficient number, since it is larger than the sum of its proper divisors (73736923).

3023212121 is an equidigital number, since it uses as much as digits as its factorization.

3023212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73736922.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3023212121 is about 54983.7441522492. The cubic root of 3023212121 is about 1445.9597589406.

Adding to 3023212121 its reverse (1212123203), we get a palindrome (4235335324).

The spelling of 3023212121 in words is "three billion, twenty-three million, two hundred twelve thousand, one hundred twenty-one".