20261172220601 has 8 divisors (see below), whose sum is σ = 21832387752000. Its totient is φ = 18691765806672.

The previous prime is 20261172220579. The next prime is 20261172220607. The reversal of 20261172220601 is 10602227116202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20261172220601 - 2¹⁰ = 20261172219577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20261172220607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452256101 + ... + 452300898.

It is an arithmetic number, because the mean of its divisors is an integer number (2729048469000).

Almost surely, 2^{20261172220601} is an apocalyptic number.

It is an amenable number.

20261172220601 is a deficient number, since it is larger than the sum of its proper divisors (1571215531399).

20261172220601 is a wasteful number, since it uses less digits than its factorization.

20261172220601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904558735.

The product of its (nonzero) digits is 8064, while the sum is 32.

Adding to 20261172220601 its reverse (10602227116202), we get a palindrome (30863399336803).

The spelling of 20261172220601 in words is "twenty trillion, two hundred sixty-one billion, one hundred seventy-two million, two hundred twenty thousand, six hundred one".