100121000221010 has 16 divisors (see below), whose sum is σ = 180219682192536. Its totient is φ = 40047981911808.

The previous prime is 100121000221009. The next prime is 100121000221049. The reversal of 100121000221010 is 10122000121001.

It can be written as a sum of positive squares in 4 ways, for example, as 53516525619001 + 46604474602009 = 7315499^2 + 6826747^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100121000220982 and 100121000221000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51265577 + ... + 53182716.

Almost surely, 2^{100121000221010} is an apocalyptic number.

100121000221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100121000221010 is a deficient number, since it is larger than the sum of its proper divisors (80098681971526).

100121000221010 is a wasteful number, since it uses less digits than its factorization.

100121000221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104544157.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100121000221010 its reverse (10122000121001), we get a palindrome (110243000342011).

The spelling of 100121000221010 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty-one thousand, ten".