100132221221 has 2 divisors, whose sum is σ = 100132221222. Its totient is φ = 100132221220.

The previous prime is 100132221173. The next prime is 100132221253. The reversal of 100132221221 is 122122231001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97663125121 + 2469096100 = 312511^2 + 49690^2 .

It is a cyclic number.

It is not a de Polignac number, because 100132221221 - 2¹⁰ = 100132220197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100132221221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100132221521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50066110610 + 50066110611.

It is an arithmetic number, because the mean of its divisors is an integer number (50066110611).

Almost surely, 2^100132221221 is an apocalyptic number.

It is an amenable number.

100132221221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100132221221 is an equidigital number, since it uses as much as digits as its factorization.

100132221221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 100132221221 its reverse (122122231001), we get a palindrome (222254452222).

The spelling of 100132221221 in words is "one hundred billion, one hundred thirty-two million, two hundred twenty-one thousand, two hundred twenty-one".