20302012121 has 8 divisors (see below), whose sum is σ = 20511009864. Its totient is φ = 20093171200.

The previous prime is 20302012079. The next prime is 20302012123. The reversal of 20302012121 is 12121020302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10268984896 + 10033027225 = 101336^2 + 100165^2 .

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 20302012121 - 2¹⁴ = 20301995737 is a prime.

It is a super-2 number, since 2×20302012121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20302012096 and 20302012105.

It is not an unprimeable number, because it can be changed into a prime (20302012123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230531 + ... + 306183.

It is an arithmetic number, because the mean of its divisors is an integer number (2563876233).

Almost surely, 2^20302012121 is an apocalyptic number.

It is an amenable number.

20302012121 is a deficient number, since it is larger than the sum of its proper divisors (208997743).

20302012121 is a wasteful number, since it uses less digits than its factorization.

20302012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78411.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20302012121 its reverse (12121020302), we get a palindrome (32423032423).

The spelling of 20302012121 in words is "twenty billion, three hundred two million, twelve thousand, one hundred twenty-one".