136221421107 has 32 divisors (see below), whose sum is σ = 200875783680. Its totient is φ = 81723640320.

The previous prime is 136221421093. The next prime is 136221421117. The reversal of 136221421107 is 701124122631.

It is not a de Polignac number, because 136221421107 - 2¹² = 136221417011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136221421117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294769 + ... + 599442.

It is an arithmetic number, because the mean of its divisors is an integer number (6277368240).

Almost surely, 2^136221421107 is an apocalyptic number.

136221421107 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

136221421107 is a deficient number, since it is larger than the sum of its proper divisors (64654362573).

136221421107 is a wasteful number, since it uses less digits than its factorization.

136221421107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894363.

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 136221421107 its reverse (701124122631), we get a palindrome (837345543738).

The spelling of 136221421107 in words is "one hundred thirty-six billion, two hundred twenty-one million, four hundred twenty-one thousand, one hundred seven".