61102220 has 24 divisors (see below), whose sum is σ = 128764944. Its totient is φ = 24355136.

The previous prime is 61102219. The next prime is 61102231. The reversal of 61102220 is 2220116.

It is a junction number, because it is equal to n+sod(n) for n = 61102195 and 61102204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647 + ... + 11073.

It is an arithmetic number, because the mean of its divisors is an integer number (5365206).

Almost surely, 2^61102220 is an apocalyptic number.

It is an amenable number.

61102220 is an abundant number, since it is smaller than the sum of its proper divisors (67662724).

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

61102220 is a wasteful number, since it uses less digits than its factorization.

61102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10729 (or 10727 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 61102220 is about 7816.7909016424. The cubic root of 61102220 is about 393.8694801600.

Adding to 61102220 its reverse (2220116), we get a palindrome (63322336).

The spelling of 61102220 in words is "sixty-one million, one hundred two thousand, two hundred twenty".