101561522061 has 16 divisors (see below), whose sum is σ = 139903121408. Its totient is φ = 65467537200.

The previous prime is 101561522057. The next prime is 101561522087. The reversal of 101561522061 is 160225165101.

It is not a de Polignac number, because 101561522061 - 2² = 101561522057 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 (101561592061) 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, 357391 + ... + 575196.

It is an arithmetic number, because the mean of its divisors is an integer number (8743945088).

Almost surely, 2^101561522061 is an apocalyptic number.

It is an amenable number.

101561522061 is a deficient number, since it is larger than the sum of its proper divisors (38341599347).

101561522061 is a wasteful number, since it uses less digits than its factorization.

101561522061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933792.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 101561522061 its reverse (160225165101), we get a palindrome (261786687162).

The spelling of 101561522061 in words is "one hundred one billion, five hundred sixty-one million, five hundred twenty-two thousand, sixty-one".