101561011 has 8 divisors (see below), whose sum is σ = 102686720. Its totient is φ = 100440648.

The previous prime is 101560999. The next prime is 101561029. The reversal of 101561011 is 110165101.

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 101561011 - 2¹³ = 101552819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101561071) 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, 45520 + ... + 47698.

It is an arithmetic number, because the mean of its divisors is an integer number (12835840).

Almost surely, 2^101561011 is an apocalyptic number.

101561011 is a deficient number, since it is larger than the sum of its proper divisors (1125709).

101561011 is a wasteful number, since it uses less digits than its factorization.

101561011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 101561011 is about 10077.7483100145. The cubic root of 101561011 is about 466.5616145052.

It can be divided in two parts, 1015 and 61011, that added together give a palindrome (62026).

The spelling of 101561011 in words is "one hundred one million, five hundred sixty-one thousand, eleven".