10212012210021 has 32 divisors (see below), whose sum is σ = 14103636890112. Its totient is φ = 6568118800320.

The previous prime is 10212012210019. The next prime is 10212012210031. The reversal of 10212012210021 is 12001221021201.

It is not a de Polignac number, because 10212012210021 - 2¹ = 10212012210019 is a prime.

It is a super-2 number, since 2×10212012210021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212012210031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49609891 + ... + 49815311.

It is an arithmetic number, because the mean of its divisors is an integer number (440738652816).

Almost surely, 2^{10212012210021} is an apocalyptic number.

It is an amenable number.

10212012210021 is a deficient number, since it is larger than the sum of its proper divisors (3891624680091).

10212012210021 is a wasteful number, since it uses less digits than its factorization.

10212012210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210193.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10212012210021 its reverse (12001221021201), we get a palindrome (22213233231222).

The spelling of 10212012210021 in words is "ten trillion, two hundred twelve billion, twelve million, two hundred ten thousand, twenty-one".