220415229997 has 2 divisors, whose sum is σ = 220415229998. Its totient is φ = 220415229996.

The previous prime is 220415229961. The next prime is 220415230043. The reversal of 220415229997 is 799922514022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136304209636 + 84111020361 = 369194^2 + 290019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220415229997 is a prime.

It is a super-3 number, since 3×220415229997³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220415229197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110207614998 + 110207614999.

It is an arithmetic number, because the mean of its divisors is an integer number (110207614999).

Almost surely, 2^220415229997 is an apocalyptic number.

It is an amenable number.

220415229997 is a deficient number, since it is larger than the sum of its proper divisors (1).

220415229997 is an equidigital number, since it uses as much as digits as its factorization.

220415229997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 220415229997 in words is "two hundred twenty billion, four hundred fifteen million, two hundred twenty-nine thousand, nine hundred ninety-seven".