116221020531 has 64 divisors (see below), whose sum is σ = 198790901760. Its totient is φ = 58633061760.

The previous prime is 116221020521. The next prime is 116221020551. The reversal of 116221020531 is 135020122611.

It is a happy number.

It is not a de Polignac number, because 116221020531 - 2¹⁴ = 116221004147 is a prime.

It is a super-2 number, since 2×116221020531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (116221020521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4662780 + ... + 4687638.

It is an arithmetic number, because the mean of its divisors is an integer number (3106107840).

Almost surely, 2^116221020531 is an apocalyptic number.

116221020531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

116221020531 is a deficient number, since it is larger than the sum of its proper divisors (82569881229).

116221020531 is a wasteful number, since it uses less digits than its factorization.

116221020531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25464.

The product of its (nonzero) digits is 720, while the sum is 24.

The spelling of 116221020531 in words is "one hundred sixteen billion, two hundred twenty-one million, twenty thousand, five hundred thirty-one".