213220100123201 has 2 divisors, whose sum is σ = 213220100123202. Its totient is φ = 213220100123200.

The previous prime is 213220100123131. The next prime is 213220100123227. The reversal of 213220100123201 is 102321001022312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177872901610000 + 35347198513201 = 13336900^2 + 5945351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213220100123201 is a prime.

It is a super-2 number, since 2×213220100123201² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213220100123501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106610050061600 + 106610050061601.

It is an arithmetic number, because the mean of its divisors is an integer number (106610050061601).

Almost surely, 2^{213220100123201} is an apocalyptic number.

It is an amenable number.

213220100123201 is a deficient number, since it is larger than the sum of its proper divisors (1).

213220100123201 is an equidigital number, since it uses as much as digits as its factorization.

213220100123201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 213220100123201 its reverse (102321001022312), we get a palindrome (315541101145513).

The spelling of 213220100123201 in words is "two hundred thirteen trillion, two hundred twenty billion, one hundred million, one hundred twenty-three thousand, two hundred one".