135550401123211 has 24 divisors (see below), whose sum is σ = 138184841450400. Its totient is φ = 132962461632000.

The previous prime is 135550401123187. The next prime is 135550401123223. The reversal of 135550401123211 is 112321104055531.

It is not a de Polignac number, because 135550401123211 - 2²¹ = 135550399026059 is a prime.

It is a super-2 number, since 2×135550401123211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135550401123281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2482535311 + ... + 2482589911.

It is an arithmetic number, because the mean of its divisors is an integer number (5757701727100).

Almost surely, 2^{135550401123211} is an apocalyptic number.

135550401123211 is a deficient number, since it is larger than the sum of its proper divisors (2634440327189).

135550401123211 is an equidigital number, since it uses as much as digits as its factorization.

135550401123211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57287 (or 57214 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

Adding to 135550401123211 its reverse (112321104055531), we get a palindrome (247871505178742).

The spelling of 135550401123211 in words is "one hundred thirty-five trillion, five hundred fifty billion, four hundred one million, one hundred twenty-three thousand, two hundred eleven".