10212101211021 has 16 divisors (see below), whose sum is σ = 13984235725248. Its totient is φ = 6624019641600.

The previous prime is 10212101211019. The next prime is 10212101211047. The reversal of 10212101211021 is 12011210121201.

It is a happy number.

It is not a de Polignac number, because 10212101211021 - 2¹ = 10212101211019 is a prime.

It is a super-2 number, since 2×10212101211021² (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 (10212101211121) 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 15 ways as a sum of consecutive naturals, for example, 24109141 + ... + 24529061.

It is an arithmetic number, because the mean of its divisors is an integer number (874014732828).

Almost surely, 2^{10212101211021} is an apocalyptic number.

It is an amenable number.

10212101211021 is a deficient number, since it is larger than the sum of its proper divisors (3772134514227).

10212101211021 is a wasteful number, since it uses less digits than its factorization.

10212101211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639052.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10212101211021 its reverse (12011210121201), we get a palindrome (22223311332222).

The spelling of 10212101211021 in words is "ten trillion, two hundred twelve billion, one hundred one million, two hundred eleven thousand, twenty-one".