10212021021 has 16 divisors (see below), whose sum is σ = 13947058944. Its totient is φ = 6643359744.

The previous prime is 10212021013. The next prime is 10212021037. The reversal of 10212021021 is 12012021201.

It is not a de Polignac number, because 10212021021 - 2³ = 10212021013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212020988 and 10212021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212061021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59940 + ... + 154973.

It is an arithmetic number, because the mean of its divisors is an integer number (871691184).

Almost surely, 2^10212021021 is an apocalyptic number.

It is an amenable number.

10212021021 is a deficient number, since it is larger than the sum of its proper divisors (3735037923).

10212021021 is a wasteful number, since it uses less digits than its factorization.

10212021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215300.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10212021021 its reverse (12012021201), we get a palindrome (22224042222).

The spelling of 10212021021 in words is "ten billion, two hundred twelve million, twenty-one thousand, twenty-one".