100212021101221 has 16 divisors (see below), whose sum is σ = 100746898357248. Its totient is φ = 99677996758000.

The previous prime is 100212021101207. The next prime is 100212021101267. The reversal of 100212021101221 is 122101120212001.

It is a cyclic number.

It is not a de Polignac number, because 100212021101221 - 2²⁵ = 100211987546789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100212021101195 and 100212021101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212021101281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1469975466 + ... + 1470043636.

It is an arithmetic number, because the mean of its divisors is an integer number (6296681147328).

Almost surely, 2^{100212021101221} is an apocalyptic number.

It is an amenable number.

100212021101221 is a deficient number, since it is larger than the sum of its proper divisors (534877256027).

100212021101221 is a wasteful number, since it uses less digits than its factorization.

100212021101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74312.

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

Adding to 100212021101221 its reverse (122101120212001), we get a palindrome (222313141313222).

The spelling of 100212021101221 in words is "one hundred trillion, two hundred twelve billion, twenty-one million, one hundred one thousand, two hundred twenty-one".