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121220111220199 is a prime number
BaseRepresentation
bin11011100011111111000001…
…101010110011110111100111
3120220012112021222021222121021
4123203333001222303313213
5111342032241433021244
61105451430022432011
734350602234350225
oct3343770152636747
9526175258258537
10121220111220199
1135696184644742
1211719329b92607
135284013460b74
1421d1128551b15
15e0332ec2b284
hex6e3fc1ab3de7

121220111220199 has 2 divisors, whose sum is σ = 121220111220200. Its totient is φ = 121220111220198.

The previous prime is 121220111220193. The next prime is 121220111220217. The reversal of 121220111220199 is 991022111022121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121220111220199 - 215 = 121220111187431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220111220193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610055610099 + 60610055610100.

It is an arithmetic number, because the mean of its divisors is an integer number (60610055610100).

Almost surely, 2121220111220199 is an apocalyptic number.

121220111220199 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220111220199 is an equidigital number, since it uses as much as digits as its factorization.

121220111220199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 121220111220199 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty thousand, one hundred ninety-nine".