100200111101221 has 16 divisors (see below), whose sum is σ = 106070165501760. Its totient is φ = 94391089067520.

The previous prime is 100200111101161. The next prime is 100200111101243. The reversal of 100200111101221 is 122101111002001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100200111101221 - 2¹⁹ = 100200110576933 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 (100200111101261) 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, 16803436 + ... + 21971701.

It is an arithmetic number, because the mean of its divisors is an integer number (6629385343860).

Almost surely, 2^{100200111101221} is an apocalyptic number.

It is an amenable number.

100200111101221 is a deficient number, since it is larger than the sum of its proper divisors (5870054400539).

100200111101221 is a wasteful number, since it uses less digits than its factorization.

100200111101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38775924.

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

Adding to 100200111101221 its reverse (122101111002001), we get a palindrome (222301222103222).

The spelling of 100200111101221 in words is "one hundred trillion, two hundred billion, one hundred eleven million, one hundred one thousand, two hundred twenty-one".