100111121222021 has 8 divisors (see below), whose sum is σ = 123213687657984. Its totient is φ = 79208799208560.

The previous prime is 100111121222009. The next prime is 100111121222087. The reversal of 100111121222021 is 120222121111001.

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

It is not a de Polignac number, because 100111121222021 - 2¹⁴ = 100111121205637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111121221021) 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, 550061105525 + ... + 550061105706.

It is an arithmetic number, because the mean of its divisors is an integer number (15401710957248).

Almost surely, 2^{100111121222021} is an apocalyptic number.

It is an amenable number.

100111121222021 is a deficient number, since it is larger than the sum of its proper divisors (23102566435963).

100111121222021 is a wasteful number, since it uses less digits than its factorization.

100111121222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100122211251.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 100111121222021 its reverse (120222121111001), we get a palindrome (220333242333022).

The spelling of 100111121222021 in words is "one hundred trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, twenty-one".