61102120 has 16 divisors (see below), whose sum is σ = 137479860. Its totient is φ = 24440832.

The previous prime is 61102073. The next prime is 61102121. The reversal of 61102120 is 2120116.

It can be written as a sum of positive squares in 2 ways, for example, as 52911076 + 8191044 = 7274^2 + 2862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61102120.

It is not an unprimeable number, because it can be changed into a prime (61102121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763737 + ... + 763816.

Almost surely, 2^61102120 is an apocalyptic number.

It is an amenable number.

61102120 is an abundant number, since it is smaller than the sum of its proper divisors (76377740).

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

61102120 is a wasteful number, since it uses less digits than its factorization.

61102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527564 (or 1527560 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 61102120 is about 7816.7845051530. The cubic root of 61102120 is about 393.8692652907.

Adding to 61102120 its reverse (2120116), we get a palindrome (63222236).

The spelling of 61102120 in words is "sixty-one million, one hundred two thousand, one hundred twenty".