100212020100121 has 2 divisors, whose sum is σ = 100212020100122. Its totient is φ = 100212020100120.

The previous prime is 100212020100109. The next prime is 100212020100263. The reversal of 100212020100121 is 121001020212001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87285370616896 + 12926649483225 = 9342664^2 + 3595365^2 .

It is a cyclic number.

It is not a de Polignac number, because 100212020100121 - 2¹⁷ = 100212019969049 is a prime.

It is not a weakly prime, because it can be changed into another prime (100212020109121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50106010050060 + 50106010050061.

It is an arithmetic number, because the mean of its divisors is an integer number (50106010050061).

Almost surely, 2^{100212020100121} is an apocalyptic number.

It is an amenable number.

100212020100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

100212020100121 is an equidigital number, since it uses as much as digits as its factorization.

100212020100121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100212020100121 its reverse (121001020212001), we get a palindrome (221213040312122).

The spelling of 100212020100121 in words is "one hundred trillion, two hundred twelve billion, twenty million, one hundred thousand, one hundred twenty-one".