102100121215051 has 2 divisors, whose sum is σ = 102100121215052. Its totient is φ = 102100121215050.

The previous prime is 102100121215049. The next prime is 102100121215121. The reversal of 102100121215051 is 150512121001201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102100121215051 - 2¹ = 102100121215049 is a prime.

Together with 102100121215049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102100121215031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050060607525 + 51050060607526.

It is an arithmetic number, because the mean of its divisors is an integer number (51050060607526).

Almost surely, 2^{102100121215051} is an apocalyptic number.

102100121215051 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100121215051 is an equidigital number, since it uses as much as digits as its factorization.

102100121215051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 22.

Adding to 102100121215051 its reverse (150512121001201), we get a palindrome (252612242216252).

The spelling of 102100121215051 in words is "one hundred two trillion, one hundred billion, one hundred twenty-one million, two hundred fifteen thousand, fifty-one".