100121202221011 has 4 divisors (see below), whose sum is σ = 101762533405024. Its totient is φ = 98479871037000.

The previous prime is 100121202220939. The next prime is 100121202221021. The reversal of 100121202221011 is 110122202121001.

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

It is a cyclic number.

It is not a de Polignac number, because 100121202221011 - 2¹⁹ = 100121201696723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100121202221021) 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, 820665591915 + ... + 820665592036.

It is an arithmetic number, because the mean of its divisors is an integer number (25440633351256).

Almost surely, 2^{100121202221011} is an apocalyptic number.

100121202221011 is a deficient number, since it is larger than the sum of its proper divisors (1641331184013).

100121202221011 is an equidigital number, since it uses as much as digits as its factorization.

100121202221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641331184012.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100121202221011 its reverse (110122202121001), we get a palindrome (210243404342012).

The spelling of 100121202221011 in words is "one hundred trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, eleven".