21622136145041 has 4 divisors (see below), whose sum is σ = 22894026506532. Its totient is φ = 20350245783552.

The previous prime is 21622136145023. The next prime is 21622136145047. The reversal of 21622136145041 is 14054163122612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6132433140625 + 15489703004416 = 2476375^2 + 3935696^2 .

It is a cyclic number.

It is not a de Polignac number, because 21622136145041 - 2¹⁰ = 21622136144017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21622136144986 and 21622136145004.

It is not an unprimeable number, because it can be changed into a prime (21622136145047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635945180720 + ... + 635945180753.

It is an arithmetic number, because the mean of its divisors is an integer number (5723506626633).

Almost surely, 2^{21622136145041} is an apocalyptic number.

It is an amenable number.

21622136145041 is a deficient number, since it is larger than the sum of its proper divisors (1271890361491).

21622136145041 is a wasteful number, since it uses less digits than its factorization.

21622136145041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271890361490.

The product of its (nonzero) digits is 69120, while the sum is 38.

Adding to 21622136145041 its reverse (14054163122612), we get a palindrome (35676299267653).

The spelling of 21622136145041 in words is "twenty-one trillion, six hundred twenty-two billion, one hundred thirty-six million, one hundred forty-five thousand, forty-one".