2012210220561 has 8 divisors (see below), whose sum is σ = 2684090109024. Its totient is φ = 1340901906240.

The previous prime is 2012210220487. The next prime is 2012210220607. The reversal of 2012210220561 is 1650220122102.

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

It is not a de Polignac number, because 2012210220561 - 2⁹ = 2012210220049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2012210220161) 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, 142885320 + ... + 142899401.

It is an arithmetic number, because the mean of its divisors is an integer number (335511263628).

Almost surely, 2^{2012210220561} is an apocalyptic number.

It is an amenable number.

2012210220561 is a deficient number, since it is larger than the sum of its proper divisors (671879888463).

2012210220561 is a wasteful number, since it uses less digits than its factorization.

2012210220561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285787071.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 2012210220561 its reverse (1650220122102), we get a palindrome (3662430342663).

The spelling of 2012210220561 in words is "two trillion, twelve billion, two hundred ten million, two hundred twenty thousand, five hundred sixty-one".