1210100002021 has 8 divisors (see below), whose sum is σ = 1216418787584. Its totient is φ = 1203781720320.

The previous prime is 1210100002019. The next prime is 1210100002043. The reversal of 1210100002021 is 1202000010121.

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 1210100002021 - 2¹ = 1210100002019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210100001989 and 1210100002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210100002721) 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 7 ways as a sum of consecutive naturals, for example, 5297356 + ... + 5521066.

It is an arithmetic number, because the mean of its divisors is an integer number (152052348448).

Almost surely, 2^{1210100002021} is an apocalyptic number.

It is an amenable number.

1210100002021 is a deficient number, since it is larger than the sum of its proper divisors (6318785563).

1210100002021 is a wasteful number, since it uses less digits than its factorization.

1210100002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251931.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1210100002021 its reverse (1202000010121), we get a palindrome (2412100012142).

The spelling of 1210100002021 in words is "one trillion, two hundred ten billion, one hundred million, two thousand, twenty-one".