61012223 has 12 divisors (see below), whose sum is σ = 64294272. Its totient is φ = 57862080.

The previous prime is 61012219. The next prime is 61012229. The reversal of 61012223 is 32221016.

It is not a de Polignac number, because 61012223 - 2² = 61012219 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 (61012229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55586 + ... + 56672.

It is an arithmetic number, because the mean of its divisors is an integer number (5357856).

Almost surely, 2^61012223 is an apocalyptic number.

61012223 is a deficient number, since it is larger than the sum of its proper divisors (3282049).

61012223 is a wasteful number, since it uses less digits than its factorization.

61012223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 61012223 is about 7811.0321341037. The cubic root of 61012223 is about 393.6760093439.

Adding to 61012223 its reverse (32221016), we get a palindrome (93233239).

The spelling of 61012223 in words is "sixty-one million, twelve thousand, two hundred twenty-three".