100021212011121 has 8 divisors (see below), whose sum is σ = 133361705200320. Its totient is φ = 66680763414672.

The previous prime is 100021212011101. The next prime is 100021212011191. The reversal of 100021212011121 is 121110212120001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100021212011121 - 2¹⁷ = 100021211880049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100021212011121.

It is not an unprimeable number, because it can be changed into a prime (100021212011101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5506701 + ... + 15177818.

It is an arithmetic number, because the mean of its divisors is an integer number (16670213150040).

Almost surely, 2^{100021212011121} is an apocalyptic number.

It is an amenable number.

100021212011121 is a deficient number, since it is larger than the sum of its proper divisors (33340493189199).

100021212011121 is a wasteful number, since it uses less digits than its factorization.

100021212011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22296375.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100021212011121 its reverse (121110212120001), we get a palindrome (221131424131122).

The spelling of 100021212011121 in words is "one hundred trillion, twenty-one billion, two hundred twelve million, eleven thousand, one hundred twenty-one".