121202112101951 has 2 divisors, whose sum is σ = 121202112101952. Its totient is φ = 121202112101950.

The previous prime is 121202112101947. The next prime is 121202112102103. The reversal of 121202112101951 is 159101211202121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121202112101951 - 2² = 121202112101947 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121202112101251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601056050975 + 60601056050976.

It is an arithmetic number, because the mean of its divisors is an integer number (60601056050976).

Almost surely, 2^{121202112101951} is an apocalyptic number.

121202112101951 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202112101951 is an equidigital number, since it uses as much as digits as its factorization.

121202112101951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 29.

The spelling of 121202112101951 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred twelve million, one hundred one thousand, nine hundred fifty-one".