2011560610021 has 8 divisors (see below), whose sum is σ = 2023887005784. Its totient is φ = 1999242247680.

The previous prime is 2011560610013. The next prime is 2011560610027. The reversal of 2011560610021 is 1200160651102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 292774059396 + 1718786550625 = 541086^2 + 1311025^2 .

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 2011560610021 - 2³ = 2011560610013 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 (2011560610027) 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, 1505640 + ... + 2508001.

It is an arithmetic number, because the mean of its divisors is an integer number (252985875723).

Almost surely, 2^{2011560610021} is an apocalyptic number.

It is an amenable number.

2011560610021 is a deficient number, since it is larger than the sum of its proper divisors (12326395763).

2011560610021 is a wasteful number, since it uses less digits than its factorization.

2011560610021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016711.

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

The spelling of 2011560610021 in words is "two trillion, eleven billion, five hundred sixty million, six hundred ten thousand, twenty-one".