220951061 has 2 divisors, whose sum is σ = 220951062. Its totient is φ = 220951060.

The previous prime is 220951051. The next prime is 220951067. The reversal of 220951061 is 160159022.

220951061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201810436 + 19140625 = 14206^2 + 4375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220951061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220951061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220951067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110475530 + 110475531.

It is an arithmetic number, because the mean of its divisors is an integer number (110475531).

Almost surely, 2^220951061 is an apocalyptic number.

It is an amenable number.

220951061 is a deficient number, since it is larger than the sum of its proper divisors (1).

220951061 is an equidigital number, since it uses as much as digits as its factorization.

220951061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 220951061 is about 14864.4226594914. The cubic root of 220951061 is about 604.5497284886.

The spelling of 220951061 in words is "two hundred twenty million, nine hundred fifty-one thousand, sixty-one".