1022221665061 has 16 divisors (see below), whose sum is σ = 1031506660800. Its totient is φ = 1012980843648.

The previous prime is 1022221665041. The next prime is 1022221665071. The reversal of 1022221665061 is 1605661222201.

It is a cyclic number.

It is not a de Polignac number, because 1022221665061 - 2⁵ = 1022221665029 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 (1022221665041) 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, 95271145 + ... + 95281873.

It is an arithmetic number, because the mean of its divisors is an integer number (64469166300).

Almost surely, 2^{1022221665061} is an apocalyptic number.

It is an amenable number.

1022221665061 is a deficient number, since it is larger than the sum of its proper divisors (9284995739).

1022221665061 is a wasteful number, since it uses less digits than its factorization.

1022221665061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12708.

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 1022221665061 its reverse (1605661222201), we get a palindrome (2627882887262).

The spelling of 1022221665061 in words is "one trillion, twenty-two billion, two hundred twenty-one million, six hundred sixty-five thousand, sixty-one".