136055421021 has 16 divisors (see below), whose sum is σ = 195583429440. Its totient is φ = 83631356160.

The previous prime is 136055421013. The next prime is 136055421083. The reversal of 136055421021 is 120124550631.

It is not a de Polignac number, because 136055421021 - 2³ = 136055421013 is a prime.

It is a super-2 number, since 2×136055421021² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136055421021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136055421121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1945551 + ... + 2014268.

It is an arithmetic number, because the mean of its divisors is an integer number (12223964340).

Almost surely, 2^136055421021 is an apocalyptic number.

It is an amenable number.

136055421021 is a deficient number, since it is larger than the sum of its proper divisors (59528008419).

136055421021 is a wasteful number, since it uses less digits than its factorization.

136055421021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960716.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 136055421021 its reverse (120124550631), we get a palindrome (256179971652).

The spelling of 136055421021 in words is "one hundred thirty-six billion, fifty-five million, four hundred twenty-one thousand, twenty-one".