100121022110021 has 8 divisors (see below), whose sum is σ = 113971756394304. Its totient is φ = 87061758356320.

The previous prime is 100121022109993. The next prime is 100121022110029. The reversal of 100121022110021 is 120011220121001.

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

It is not a de Polignac number, because 100121022110021 - 2¹⁸ = 100121021847877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121022109978 and 100121022110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121022110029) 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, 197867632376 + ... + 197867632881.

It is an arithmetic number, because the mean of its divisors is an integer number (14246469549288).

Almost surely, 2^{100121022110021} is an apocalyptic number.

100121022110021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100121022110021 is a deficient number, since it is larger than the sum of its proper divisors (13850734284283).

100121022110021 is a wasteful number, since it uses less digits than its factorization.

100121022110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395735265291.

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

Adding to 100121022110021 its reverse (120011220121001), we get a palindrome (220132242231022).

The spelling of 100121022110021 in words is "one hundred trillion, one hundred twenty-one billion, twenty-two million, one hundred ten thousand, twenty-one".