10121222021 has 16 divisors (see below), whose sum is σ = 10367222400. Its totient is φ = 9878600448.

The previous prime is 10121222011. The next prime is 10121222057. The reversal of 10121222021 is 12022212101.

10121222021 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10121222021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121221987 and 10121222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121222011) 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 15 ways as a sum of consecutive naturals, for example, 3588950 + ... + 3591768.

It is an arithmetic number, because the mean of its divisors is an integer number (647951400).

Almost surely, 2^10121222021 is an apocalyptic number.

It is an amenable number.

10121222021 is a deficient number, since it is larger than the sum of its proper divisors (246000379).

10121222021 is a wasteful number, since it uses less digits than its factorization.

10121222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10121222021 its reverse (12022212101), we get a palindrome (22143434122).

The spelling of 10121222021 in words is "ten billion, one hundred twenty-one million, two hundred twenty-two thousand, twenty-one".