61217000101 has 2 divisors, whose sum is σ = 61217000102. Its totient is φ = 61217000100.

The previous prime is 61217000071. The next prime is 61217000111. The reversal of 61217000101 is 10100071216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31710349476 + 29506650625 = 178074^2 + 171775^2 .

It is a cyclic number.

It is not a de Polignac number, because 61217000101 - 2⁵ = 61217000069 is a prime.

It is a super-2 number, since 2×61217000101² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61217000111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30608500050 + 30608500051.

It is an arithmetic number, because the mean of its divisors is an integer number (30608500051).

Almost surely, 2^61217000101 is an apocalyptic number.

It is an amenable number.

61217000101 is a deficient number, since it is larger than the sum of its proper divisors (1).

61217000101 is an equidigital number, since it uses as much as digits as its factorization.

61217000101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 61217000101 its reverse (10100071216), we get a palindrome (71317071317).

The spelling of 61217000101 in words is "sixty-one billion, two hundred seventeen million, one hundred one", and thus it is an aban number.