61112212 has 36 divisors (see below), whose sum is σ = 131732244. Its totient is φ = 24648960.

The previous prime is 61112203. The next prime is 61112213. The reversal of 61112212 is 21221116.

It can be written as a sum of positive squares in 2 ways, for example, as 25542916 + 35569296 = 5054^2 + 5964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61112213) 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, 5839 + ... + 12502.

It is an arithmetic number, because the mean of its divisors is an integer number (3659229).

Almost surely, 2^61112212 is an apocalyptic number.

It is an amenable number.

61112212 is an abundant number, since it is smaller than the sum of its proper divisors (70620032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61112212 is a wasteful number, since it uses less digits than its factorization.

61112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18376 (or 18367 counting only the distinct ones).

The product of its digits is 48, while the sum is 16.

The square root of 61112212 is about 7817.4300124785. The cubic root of 61112212 is about 393.8909487162.

Adding to 61112212 its reverse (21221116), we get a palindrome (82333328).

The spelling of 61112212 in words is "sixty-one million, one hundred twelve thousand, two hundred twelve".