100121221221023 has 2 divisors, whose sum is σ = 100121221221024. Its totient is φ = 100121221221022.

The previous prime is 100121221220957. The next prime is 100121221221107. The reversal of 100121221221023 is 320122122121001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100121221221023 - 2³² = 100116926253727 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 100121221220986 and 100121221221004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100121221221223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060610610511 + 50060610610512.

It is an arithmetic number, because the mean of its divisors is an integer number (50060610610512).

Almost surely, 2^{100121221221023} is an apocalyptic number.

100121221221023 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121221221023 is an equidigital number, since it uses as much as digits as its factorization.

100121221221023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 100121221221023 its reverse (320122122121001), we get a palindrome (420243343342024).

The spelling of 100121221221023 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-one thousand, twenty-three".