100100102120221 has 16 divisors (see below), whose sum is σ = 115083833356800. Its totient is φ = 85287671796528.

The previous prime is 100100102120191. The next prime is 100100102120273. The reversal of 100100102120221 is 122021201001001.

It is a cyclic number.

It is not a de Polignac number, because 100100102120221 - 2⁹ = 100100102119709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100100102120521) 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, 12256755 + ... + 18719728.

It is an arithmetic number, because the mean of its divisors is an integer number (7192739584800).

Almost surely, 2^{100100102120221} is an apocalyptic number.

It is an amenable number.

100100102120221 is a deficient number, since it is larger than the sum of its proper divisors (14983731236579).

100100102120221 is a wasteful number, since it uses less digits than its factorization.

100100102120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30979248.

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

Adding to 100100102120221 its reverse (122021201001001), we get a palindrome (222121303121222).

The spelling of 100100102120221 in words is "one hundred trillion, one hundred billion, one hundred two million, one hundred twenty thousand, two hundred twenty-one".