155033201220203 has 2 divisors, whose sum is σ = 155033201220204. Its totient is φ = 155033201220202.

The previous prime is 155033201220173. The next prime is 155033201220221. The reversal of 155033201220203 is 302022102330551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155033201220203 - 2¹⁸ = 155033200958059 is a prime.

It is a super-2 number, since 2×155033201220203² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155033201220263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77516600610101 + 77516600610102.

It is an arithmetic number, because the mean of its divisors is an integer number (77516600610102).

Almost surely, 2^{155033201220203} is an apocalyptic number.

155033201220203 is a deficient number, since it is larger than the sum of its proper divisors (1).

155033201220203 is an equidigital number, since it uses as much as digits as its factorization.

155033201220203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 155033201220203 its reverse (302022102330551), we get a palindrome (457055303550754).

The spelling of 155033201220203 in words is "one hundred fifty-five trillion, thirty-three billion, two hundred one million, two hundred twenty thousand, two hundred three".