10211210210121 has 16 divisors (see below), whose sum is σ = 13692555911424. Its totient is φ = 6768779076864.

The previous prime is 10211210210081. The next prime is 10211210210147. The reversal of 10211210210121 is 12101201211201.

It is a happy number.

It is not a de Polignac number, because 10211210210121 - 2²¹ = 10211208112969 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10211210210121.

It is not an unprimeable number, because it can be changed into a prime (10211210210921) 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 15 ways as a sum of consecutive naturals, for example, 13389330 + ... + 14131403.

It is an arithmetic number, because the mean of its divisors is an integer number (855784744464).

Almost surely, 2^{10211210210121} is an apocalyptic number.

It is an amenable number.

10211210210121 is a deficient number, since it is larger than the sum of its proper divisors (3481345701303).

10211210210121 is a wasteful number, since it uses less digits than its factorization.

10211210210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27521440.

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

Adding to 10211210210121 its reverse (12101201211201), we get a palindrome (22312411421322).

The spelling of 10211210210121 in words is "ten trillion, two hundred eleven billion, two hundred ten million, two hundred ten thousand, one hundred twenty-one".