10212111021 has 96 divisors (see below), whose sum is σ = 17650483200. Its totient is φ = 5208344064.

The previous prime is 10212110977. The next prime is 10212111053. The reversal of 10212111021 is 12011121201.

It is not a de Polignac number, because 10212111021 - 2¹⁴ = 10212094637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212110988 and 10212111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212111061) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7298880 + ... + 7300278.

It is an arithmetic number, because the mean of its divisors is an integer number (183859200).

Almost surely, 2^10212111021 is an apocalyptic number.

It is an amenable number.

10212111021 is a deficient number, since it is larger than the sum of its proper divisors (7438372179).

10212111021 is a wasteful number, since it uses less digits than its factorization.

10212111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583 (or 1576 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10212111021 its reverse (12011121201), we get a palindrome (22223232222).

The spelling of 10212111021 in words is "ten billion, two hundred twelve million, one hundred eleven thousand, twenty-one".