10212112110021 has 48 divisors (see below), whose sum is σ = 14277541478400. Its totient is φ = 6491411353440.

The previous prime is 10212112110019. The next prime is 10212112110061. The reversal of 10212112110021 is 12001121121201.

It is a happy number.

It is not a de Polignac number, because 10212112110021 - 2¹ = 10212112110019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212112110061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109048800 + ... + 109142406.

It is an arithmetic number, because the mean of its divisors is an integer number (297448780800).

Almost surely, 2^{10212112110021} is an apocalyptic number.

It is an amenable number.

10212112110021 is a deficient number, since it is larger than the sum of its proper divisors (4065429368379).

10212112110021 is an equidigital number, since it uses as much as digits as its factorization.

10212112110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94230 (or 94199 counting only the distinct ones).

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

Adding to 10212112110021 its reverse (12001121121201), we get a palindrome (22213233231222).

The spelling of 10212112110021 in words is "ten trillion, two hundred twelve billion, one hundred twelve million, one hundred ten thousand, twenty-one".