10111222061 has 4 divisors (see below), whose sum is σ = 10112044800. Its totient is φ = 10110399324.

The previous prime is 10111222021. The next prime is 10111222063. The reversal of 10111222061 is 16022211101.

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 a de Polignac number, because none of the positive numbers 2^k-10111222061 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 (10111222063) 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, 392651 + ... + 417608.

It is an arithmetic number, because the mean of its divisors is an integer number (2528011200).

Almost surely, 2^10111222061 is an apocalyptic number.

It is an amenable number.

10111222061 is a deficient number, since it is larger than the sum of its proper divisors (822739).

10111222061 is an equidigital number, since it uses as much as digits as its factorization.

10111222061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822738.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 10111222061 its reverse (16022211101), we get a palindrome (26133433162).

The spelling of 10111222061 in words is "ten billion, one hundred eleven million, two hundred twenty-two thousand, sixty-one".