61220063121 has 8 divisors (see below), whose sum is σ = 93287715264. Its totient is φ = 34982893200.

The previous prime is 61220063119. The next prime is 61220063129. The reversal of 61220063121 is 12136002216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61220063121 - 2¹ = 61220063119 is a prime.

It is a super-2 number, since 2×61220063121² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61220063091 and 61220063100.

It is not an unprimeable number, because it can be changed into a prime (61220063129) by changing a digit.

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, 1457620530 + ... + 1457620571.

It is an arithmetic number, because the mean of its divisors is an integer number (11660964408).

Almost surely, 2^61220063121 is an apocalyptic number.

It is an amenable number.

61220063121 is a deficient number, since it is larger than the sum of its proper divisors (32067652143).

61220063121 is a wasteful number, since it uses less digits than its factorization.

61220063121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915241111.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 61220063121 its reverse (12136002216), we get a palindrome (73356065337).

The spelling of 61220063121 in words is "sixty-one billion, two hundred twenty million, sixty-three thousand, one hundred twenty-one".