10100202121221 has 16 divisors (see below), whose sum is σ = 13474394400768. Its totient is φ = 6729739988400.

The previous prime is 10100202121211. The next prime is 10100202121253. The reversal of 10100202121221 is 12212120200101.

It is not a de Polignac number, because 10100202121221 - 2¹¹ = 10100202119173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10100202121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100202121211) 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, 40378680 + ... + 40628046.

It is an arithmetic number, because the mean of its divisors is an integer number (842149650048).

Almost surely, 2^{10100202121221} is an apocalyptic number.

It is an amenable number.

10100202121221 is a deficient number, since it is larger than the sum of its proper divisors (3374192279547).

10100202121221 is a wasteful number, since it uses less digits than its factorization.

10100202121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256792.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10100202121221 its reverse (12212120200101), we get a palindrome (22312322321322).

The spelling of 10100202121221 in words is "ten trillion, one hundred billion, two hundred two million, one hundred twenty-one thousand, two hundred twenty-one".