10212121020001 has 16 divisors (see below), whose sum is σ = 10385673292800. Its totient is φ = 10039887792000.

The previous prime is 10212121019983. The next prime is 10212121020067. The reversal of 10212121020001 is 10002012121201.

It is not a de Polignac number, because 10212121020001 - 2²⁹ = 10211584149089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10212121020071) 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, 176343151 + ... + 176401051.

It is an arithmetic number, because the mean of its divisors is an integer number (649104580800).

Almost surely, 2^{10212121020001} is an apocalyptic number.

It is an amenable number.

10212121020001 is a deficient number, since it is larger than the sum of its proper divisors (173552272799).

10212121020001 is a wasteful number, since it uses less digits than its factorization.

10212121020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69240.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10212121020001 its reverse (10002012121201), we get a palindrome (20214133141202).

The spelling of 10212121020001 in words is "ten trillion, two hundred twelve billion, one hundred twenty-one million, twenty thousand, one".