200101101012121 has 4 divisors (see below), whose sum is σ = 211871754012852. Its totient is φ = 188330448011392.

The previous prime is 200101101012083. The next prime is 200101101012133. The reversal of 200101101012121 is 121210101101002.

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 92370090796096 + 107731010216025 = 9610936^2 + 10379355^2 .

It is a cyclic number.

It is not a de Polignac number, because 200101101012121 - 2¹⁹ = 200101100487833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200101101012151) 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, 5885326500340 + ... + 5885326500373.

It is an arithmetic number, because the mean of its divisors is an integer number (52967938503213).

Almost surely, 2^{200101101012121} is an apocalyptic number.

It is an amenable number.

200101101012121 is a deficient number, since it is larger than the sum of its proper divisors (11770653000731).

200101101012121 is a wasteful number, since it uses less digits than its factorization.

200101101012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11770653000730.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 200101101012121 its reverse (121210101101002), we get a palindrome (321311202113123).

The spelling of 200101101012121 in words is "two hundred trillion, one hundred one billion, one hundred one million, twelve thousand, one hundred twenty-one".