1021100212201 has 8 divisors (see below), whose sum is σ = 1040304763208. Its totient is φ = 1001975184000.

The previous prime is 1021100212193. The next prime is 1021100212261. The reversal of 1021100212201 is 1022120011201.

It can be written as a sum of positive squares in 4 ways, for example, as 11274192400 + 1009826019801 = 106180^2 + 1004901^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1021100212201 - 2³ = 1021100212193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021100212261) 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, 19854780 + ... + 19906141.

It is an arithmetic number, because the mean of its divisors is an integer number (130038095401).

Almost surely, 2^{1021100212201} is an apocalyptic number.

It is an amenable number.

1021100212201 is a deficient number, since it is larger than the sum of its proper divisors (19204551007).

1021100212201 is an equidigital number, since it uses as much as digits as its factorization.

1021100212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39761403.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021100212201 its reverse (1022120011201), we get a palindrome (2043220223402).

The spelling of 1021100212201 in words is "one trillion, twenty-one billion, one hundred million, two hundred twelve thousand, two hundred one".