220011561061 has 8 divisors (see below), whose sum is σ = 240468044544. Its totient is φ = 200390036160.

The previous prime is 220011560983. The next prime is 220011561079. The reversal of 220011561061 is 160165110022.

It is a happy number.

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 220011561061 - 2¹³ = 220011552869 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 (220011561361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208739095 + ... + 208740148.

It is an arithmetic number, because the mean of its divisors is an integer number (30058505568).

Almost surely, 2^220011561061 is an apocalyptic number.

It is an amenable number.

220011561061 is a deficient number, since it is larger than the sum of its proper divisors (20456483483).

220011561061 is a wasteful number, since it uses less digits than its factorization.

220011561061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417479291.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 220011561061 its reverse (160165110022), we get a palindrome (380176671083).

The spelling of 220011561061 in words is "two hundred twenty billion, eleven million, five hundred sixty-one thousand, sixty-one".