1021111606061 has 4 divisors (see below), whose sum is σ = 1021113736800. Its totient is φ = 1021109475324.

The previous prime is 1021111606037. The next prime is 1021111606063. The reversal of 1021111606061 is 1606061111201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1021111606061 - 2²² = 1021107411757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021111606061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021111606063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26450 + ... + 1429308.

It is an arithmetic number, because the mean of its divisors is an integer number (255278434200).

Almost surely, 2^{1021111606061} is an apocalyptic number.

It is an amenable number.

1021111606061 is a deficient number, since it is larger than the sum of its proper divisors (2130739).

1021111606061 is an equidigital number, since it uses as much as digits as its factorization.

1021111606061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130738.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 1021111606061 its reverse (1606061111201), we get a palindrome (2627172717262).

The spelling of 1021111606061 in words is "one trillion, twenty-one billion, one hundred eleven million, six hundred six thousand, sixty-one".