100121013212047 has 2 divisors, whose sum is σ = 100121013212048. Its totient is φ = 100121013212046.

The previous prime is 100121013211969. The next prime is 100121013212063. The reversal of 100121013212047 is 740212310121001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100121013212047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100121013218047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060506606023 + 50060506606024.

It is an arithmetic number, because the mean of its divisors is an integer number (50060506606024).

Almost surely, 2^{100121013212047} is an apocalyptic number.

100121013212047 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121013212047 is an equidigital number, since it uses as much as digits as its factorization.

100121013212047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 100121013212047 its reverse (740212310121001), we get a palindrome (840333323333048).

The spelling of 100121013212047 in words is "one hundred trillion, one hundred twenty-one billion, thirteen million, two hundred twelve thousand, forty-seven".