200101121221 has 16 divisors (see below), whose sum is σ = 218566909440. Its totient is φ = 182552937840.

The previous prime is 200101121219. The next prime is 200101121237. The reversal of 200101121221 is 122121101002.

It is not a de Polignac number, because 200101121221 - 2¹ = 200101121219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200101121251) 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, 1666795 + ... + 1782808.

It is an arithmetic number, because the mean of its divisors is an integer number (13660431840).

Almost surely, 2^200101121221 is an apocalyptic number.

It is an amenable number.

200101121221 is a deficient number, since it is larger than the sum of its proper divisors (18465788219).

200101121221 is a wasteful number, since it uses less digits than its factorization.

200101121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449736.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200101121221 its reverse (122121101002), we get a palindrome (322222222223).

The spelling of 200101121221 in words is "two hundred billion, one hundred one million, one hundred twenty-one thousand, two hundred twenty-one".