111621061306 has 64 divisors (see below), whose sum is σ = 186286003200. Its totient is φ = 49980623616.

The previous prime is 111621061303. The next prime is 111621061309. The reversal of 111621061306 is 603160126111.

It is an interprime number because it is at equal distance from previous prime (111621061303) and next prime (111621061309).

It is a super-2 number, since 2×111621061306² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111621061303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6825916 + ... + 6842248.

It is an arithmetic number, because the mean of its divisors is an integer number (2910718800).

Almost surely, 2^111621061306 is an apocalyptic number.

111621061306 is a deficient number, since it is larger than the sum of its proper divisors (74664941894).

111621061306 is a wasteful number, since it uses less digits than its factorization.

111621061306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16543.

The product of its (nonzero) digits is 1296, while the sum is 28.

Adding to 111621061306 its reverse (603160126111), we get a palindrome (714781187417).

The spelling of 111621061306 in words is "one hundred eleven billion, six hundred twenty-one million, sixty-one thousand, three hundred six".