221025023986 has 16 divisors (see below), whose sum is σ = 357156362304. Its totient is φ = 101978424144.

The previous prime is 221025023977. The next prime is 221025023987. The reversal of 221025023986 is 689320520122.

It is a super-2 number, since 2×221025023986² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221025023987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1298526 + ... + 1458841.

It is an arithmetic number, because the mean of its divisors is an integer number (22322272644).

Almost surely, 2^221025023986 is an apocalyptic number.

221025023986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

221025023986 is a deficient number, since it is larger than the sum of its proper divisors (136131338318).

221025023986 is a wasteful number, since it uses less digits than its factorization.

221025023986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760465.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 221025023986 in words is "two hundred twenty-one billion, twenty-five million, twenty-three thousand, nine hundred eighty-six".