100202220210121 has 4 divisors (see below), whose sum is σ = 100204537764292. Its totient is φ = 100199902655952.

The previous prime is 100202220210083. The next prime is 100202220210187. The reversal of 100202220210121 is 121012022202001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2513607310096 + 97688612900025 = 1585436^2 + 9883755^2 .

It is a cyclic number.

It is not a de Polignac number, because 100202220210121 - 2²³ = 100202211821513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100202220210095 and 100202220210104.

It is not an unprimeable number, because it can be changed into a prime (100202220214121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158712230 + ... + 1158798703.

It is an arithmetic number, because the mean of its divisors is an integer number (25051134441073).

Almost surely, 2^{100202220210121} is an apocalyptic number.

It is an amenable number.

100202220210121 is a deficient number, since it is larger than the sum of its proper divisors (2317554171).

100202220210121 is an equidigital number, since it uses as much as digits as its factorization.

100202220210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317554170.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100202220210121 its reverse (121012022202001), we get a palindrome (221214242412122).

The spelling of 100202220210121 in words is "one hundred trillion, two hundred two billion, two hundred twenty million, two hundred ten thousand, one hundred twenty-one".