220043881 has 2 divisors, whose sum is σ = 220043882. Its totient is φ = 220043880.

The previous prime is 220043861. The next prime is 220043891. The reversal of 220043881 is 188340022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161061481 + 58982400 = 12691^2 + 7680^2 .

It is a cyclic number.

It is not a de Polignac number, because 220043881 - 2⁵ = 220043849 is a prime.

It is a super-2 number, since 2×220043881² = 96838619131084322, which contains 22 as substring.

It is equal to p_12124819 and since 220043881 and 12124819 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (220043861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110021940 + 110021941.

It is an arithmetic number, because the mean of its divisors is an integer number (110021941).

Almost surely, 2^220043881 is an apocalyptic number.

It is an amenable number.

220043881 is a deficient number, since it is larger than the sum of its proper divisors (1).

220043881 is an equidigital number, since it uses as much as digits as its factorization.

220043881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 220043881 is about 14833.8761286455. The cubic root of 220043881 is about 603.7212075709.

The spelling of 220043881 in words is "two hundred twenty million, forty-three thousand, eight hundred eighty-one".