221201201220953 has 2 divisors, whose sum is σ = 221201201220954. Its totient is φ = 221201201220952.

The previous prime is 221201201220943. The next prime is 221201201221171. The reversal of 221201201220953 is 359022102102122.

221201201220953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220123898384329 + 1077302836624 = 14836573^2 + 1037932^2 .

It is a cyclic number.

It is not a de Polignac number, because 221201201220953 - 2¹⁸ = 221201200958809 is a prime.

It is not a weakly prime, because it can be changed into another prime (221201201220943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600600610476 + 110600600610477.

It is an arithmetic number, because the mean of its divisors is an integer number (110600600610477).

Almost surely, 2^{221201201220953} is an apocalyptic number.

It is an amenable number.

221201201220953 is a deficient number, since it is larger than the sum of its proper divisors (1).

221201201220953 is an equidigital number, since it uses as much as digits as its factorization.

221201201220953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 221201201220953 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred one million, two hundred twenty thousand, nine hundred fifty-three".