12220060061 has 4 divisors (see below), whose sum is σ = 13330974624. Its totient is φ = 11109145500.

The previous prime is 12220060043. The next prime is 12220060079. The reversal of 12220060061 is 16006002221.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (12220060043) and next prime (12220060079).

It is a cyclic number.

It is not a de Polignac number, because 12220060061 - 2⁶ = 12220059997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220060081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555457265 + ... + 555457286.

It is an arithmetic number, because the mean of its divisors is an integer number (3332743656).

Almost surely, 2^12220060061 is an apocalyptic number.

12220060061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12220060061 is a deficient number, since it is larger than the sum of its proper divisors (1110914563).

12220060061 is a wasteful number, since it uses less digits than its factorization.

12220060061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110914562.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12220060061 its reverse (16006002221), we get a palindrome (28226062282).

The spelling of 12220060061 in words is "twelve billion, two hundred twenty million, sixty thousand, sixty-one".