212021121303 has 12 divisors (see below), whose sum is σ = 309942523800. Its totient is φ = 139644432816.

The previous prime is 212021121281. The next prime is 212021121311. The reversal of 212021121303 is 303121120212.

212021121303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212021121303 - 2⁸ = 212021121047 is a prime.

It is a super-3 number, since 3×212021121303³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021121343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141914328 + ... + 141915821.

It is an arithmetic number, because the mean of its divisors is an integer number (25828543650).

Almost surely, 2^212021121303 is an apocalyptic number.

212021121303 is a deficient number, since it is larger than the sum of its proper divisors (97921402497).

212021121303 is a wasteful number, since it uses less digits than its factorization.

212021121303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283830238 (or 283830235 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212021121303 its reverse (303121120212), we get a palindrome (515142241515).

The spelling of 212021121303 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, three hundred three".