61111222 has 4 divisors (see below), whose sum is σ = 91666836. Its totient is φ = 30555610.

The previous prime is 61111217. The next prime is 61111223. The reversal of 61111222 is 22211116.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 61111196 and 61111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61111223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15277804 + ... + 15277807.

It is an arithmetic number, because the mean of its divisors is an integer number (22916709).

Almost surely, 2^61111222 is an apocalyptic number.

61111222 is a deficient number, since it is larger than the sum of its proper divisors (30555614).

61111222 is a wasteful number, since it uses less digits than its factorization.

61111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30555613.

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

The square root of 61111222 is about 7817.3666921797. The cubic root of 61111222 is about 393.8888217319. Note that the first 4 decimals are identical.

Adding to 61111222 its reverse (22211116), we get a palindrome (83322338).

The spelling of 61111222 in words is "sixty-one million, one hundred eleven thousand, two hundred twenty-two".