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BaseRepresentation
bin11011100011111111000001…
…101010110100000100001111
3120220012112021222022000201012
4123203333001222310010033
5111342032241433033012
61105451430022435435
734350602234352461
oct3343770152640417
9526175258260635
10121220111221007
1135696184645307
1211719329b92b7b
135284013461346
1421d1128552131
15e0332ec2b622
hex6e3fc1ab410f

121220111221007 has 2 divisors, whose sum is σ = 121220111221008. Its totient is φ = 121220111221006.

The previous prime is 121220111220983. The next prime is 121220111221031. The reversal of 121220111221007 is 700122111022121.

It is a balanced prime because it is at equal distance from previous prime (121220111220983) and next prime (121220111221031).

It is a cyclic number.

It is not a de Polignac number, because 121220111221007 - 216 = 121220111155471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220111221607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610055610503 + 60610055610504.

It is an arithmetic number, because the mean of its divisors is an integer number (60610055610504).

Almost surely, 2121220111221007 is an apocalyptic number.

121220111221007 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220111221007 is an equidigital number, since it uses as much as digits as its factorization.

121220111221007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 121220111221007 its reverse (700122111022121), we get a palindrome (821342222243128).

The spelling of 121220111221007 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, seven".