100000021201 has 2 divisors, whose sum is σ = 100000021202. Its totient is φ = 100000021200.

The previous prime is 100000021193. The next prime is 100000021211. The reversal of 100000021201 is 102120000001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76259374801 + 23740646400 = 276151^2 + 154080^2 .

It is a cyclic number.

It is not a de Polignac number, because 100000021201 - 2³ = 100000021193 is a prime.

It is not a weakly prime, because it can be changed into another prime (100000021211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000010600 + 50000010601.

It is an arithmetic number, because the mean of its divisors is an integer number (50000010601).

Almost surely, 2^100000021201 is an apocalyptic number.

It is an amenable number.

100000021201 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000021201 is an equidigital number, since it uses as much as digits as its factorization.

100000021201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 100000021201 its reverse (102120000001), we get a palindrome (202120021202).

It can be divided in two parts, 1000000 and 21201, that added together give a palindrome (1021201).

The spelling of 100000021201 in words is "one hundred billion, twenty-one thousand, two hundred one".