10212101021121 has 16 divisors (see below), whose sum is σ = 13631720636160. Its totient is φ = 6800277317120.

The previous prime is 10212101021117. The next prime is 10212101021123. The reversal of 10212101021121 is 12112010121201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10212101021121 - 2² = 10212101021117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10212101021121.

It is not an unprimeable number, because it can be changed into a prime (10212101021123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13628881 + ... + 14358641.

It is an arithmetic number, because the mean of its divisors is an integer number (851982539760).

Almost surely, 2^{10212101021121} is an apocalyptic number.

It is an amenable number.

10212101021121 is a deficient number, since it is larger than the sum of its proper divisors (3419619615039).

10212101021121 is a wasteful number, since it uses less digits than its factorization.

10212101021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735096.

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

Adding to 10212101021121 its reverse (12112010121201), we get a palindrome (22324111142322).

The spelling of 10212101021121 in words is "ten trillion, two hundred twelve billion, one hundred one million, twenty-one thousand, one hundred twenty-one".