61220122 has 4 divisors (see below), whose sum is σ = 91830186. Its totient is φ = 30610060.

The previous prime is 61220113. The next prime is 61220129. The reversal of 61220122 is 22102216.

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

It can be written as a sum of positive squares in only one way, i.e., 60512841 + 707281 = 7779^2 + 841^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61220096 and 61220105.

It is not an unprimeable number, because it can be changed into a prime (61220129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15305029 + ... + 15305032.

Almost surely, 2^61220122 is an apocalyptic number.

61220122 is a deficient number, since it is larger than the sum of its proper divisors (30610064).

61220122 is a wasteful number, since it uses less digits than its factorization.

61220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30610063.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 61220122 is about 7824.3288530071. The cubic root of 61220122 is about 394.1226524273.

Adding to 61220122 its reverse (22102216), we get a palindrome (83322338).

The spelling of 61220122 in words is "sixty-one million, two hundred twenty thousand, one hundred twenty-two".