100220121011021 has 12 divisors (see below), whose sum is σ = 110159548984800. Its totient is φ = 91109000422440.

The previous prime is 100220121010987. The next prime is 100220121011027. The reversal of 100220121011021 is 120110121022001.

It is a de Polignac number, because none of the positive numbers 2^k-100220121011021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100220121010987 and 100220121011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220121011027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104001350 + ... + 104960568.

It is an arithmetic number, because the mean of its divisors is an integer number (9179962415400).

Almost surely, 2^{100220121011021} is an apocalyptic number.

100220121011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100220121011021 is a deficient number, since it is larger than the sum of its proper divisors (9939427973779).

100220121011021 is an equidigital number, since it uses as much as digits as its factorization.

100220121011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822720 (or 1822709 counting only the distinct ones).

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

Adding to 100220121011021 its reverse (120110121022001), we get a palindrome (220330242033022).

The spelling of 100220121011021 in words is "one hundred trillion, two hundred twenty billion, one hundred twenty-one million, eleven thousand, twenty-one".