34136426221 has 16 divisors (see below), whose sum is σ = 34765130736. Its totient is φ = 33512472576.

The previous prime is 34136426213. The next prime is 34136426249. The reversal of 34136426221 is 12262463143.

It can be written as a sum of positive squares in 8 ways, for example, as 8283002121 + 25853424100 = 91011^2 + 160790^2 .

It is a cyclic number.

It is not a de Polignac number, because 34136426221 - 2³ = 34136426213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34136426251) 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, 21980181 + ... + 21981733.

It is an arithmetic number, because the mean of its divisors is an integer number (2172820671).

Almost surely, 2^34136426221 is an apocalyptic number.

It is an amenable number.

34136426221 is a deficient number, since it is larger than the sum of its proper divisors (628704515).

34136426221 is a wasteful number, since it uses less digits than its factorization.

34136426221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832.

The product of its digits is 41472, while the sum is 34.

Adding to 34136426221 its reverse (12262463143), we get a palindrome (46398889364).

The spelling of 34136426221 in words is "thirty-four billion, one hundred thirty-six million, four hundred twenty-six thousand, two hundred twenty-one".