61321220110 has 16 divisors (see below), whose sum is σ = 110461903200. Its totient is φ = 24509886496.

The previous prime is 61321220071. The next prime is 61321220111. The reversal of 61321220110 is 1102212316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61321220111) 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, 2311345 + ... + 2337724.

It is an arithmetic number, because the mean of its divisors is an integer number (6903868950).

Almost surely, 2^61321220110 is an apocalyptic number.

61321220110 is a deficient number, since it is larger than the sum of its proper divisors (49140683090).

61321220110 is a wasteful number, since it uses less digits than its factorization.

61321220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650395.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 61321220110 its reverse (1102212316), we get a palindrome (62423432426).

The spelling of 61321220110 in words is "sixty-one billion, three hundred twenty-one million, two hundred twenty thousand, one hundred ten".