220281029 has 2 divisors, whose sum is σ = 220281030. Its totient is φ = 220281028.

The previous prime is 220281023. The next prime is 220281031. The reversal of 220281029 is 920182022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218596225 + 1684804 = 14785^2 + 1298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220281029 is a prime.

Together with 220281031, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 220280989 and 220281007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220281023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110140514 + 110140515.

It is an arithmetic number, because the mean of its divisors is an integer number (110140515).

Almost surely, 2^220281029 is an apocalyptic number.

It is an amenable number.

220281029 is a deficient number, since it is larger than the sum of its proper divisors (1).

220281029 is an equidigital number, since it uses as much as digits as its factorization.

220281029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 220281029 is about 14841.8674364111. The cubic root of 220281029 is about 603.9380126217.

The spelling of 220281029 in words is "two hundred twenty million, two hundred eighty-one thousand, twenty-nine".