121220100007 has 2 divisors, whose sum is σ = 121220100008. Its totient is φ = 121220100006.

The previous prime is 121220099993. The next prime is 121220100049. The reversal of 121220100007 is 700001022121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121220100007 - 2²³ = 121211711399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220100097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610050003 + 60610050004.

It is an arithmetic number, because the mean of its divisors is an integer number (60610050004).

Almost surely, 2^121220100007 is an apocalyptic number.

121220100007 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220100007 is an equidigital number, since it uses as much as digits as its factorization.

121220100007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 121220100007 its reverse (700001022121), we get a palindrome (821221122128).

The spelling of 121220100007 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred thousand, seven".