100121210022101 has 4 divisors (see below), whose sum is σ = 100510786715052. Its totient is φ = 99731633329152.

The previous prime is 100121210022089. The next prime is 100121210022121. The reversal of 100121210022101 is 101220012121001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96039804000100 + 4081406022001 = 9799990^2 + 2020249^2 .

It is a cyclic number.

It is not a de Polignac number, because 100121210022101 - 2⁶ = 100121210022037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121210022121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194788346090 + ... + 194788346603.

It is an arithmetic number, because the mean of its divisors is an integer number (25127696678763).

Almost surely, 2^{100121210022101} is an apocalyptic number.

It is an amenable number.

100121210022101 is a deficient number, since it is larger than the sum of its proper divisors (389576692951).

100121210022101 is an equidigital number, since it uses as much as digits as its factorization.

100121210022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389576692950.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100121210022101 its reverse (101220012121001), we get a palindrome (201341222143102).

The spelling of 100121210022101 in words is "one hundred trillion, one hundred twenty-one billion, two hundred ten million, twenty-two thousand, one hundred one".