1021200010211 has 4 divisors (see below), whose sum is σ = 1021204816632. Its totient is φ = 1021195203792.

The previous prime is 1021200010163. The next prime is 1021200010217. The reversal of 1021200010211 is 1120100021201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021200010211 - 2⁶ = 1021200010147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021200010192 and 1021200010201.

It is not an unprimeable number, because it can be changed into a prime (1021200010217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2069021 + ... + 2514606.

It is an arithmetic number, because the mean of its divisors is an integer number (255301204158).

Almost surely, 2^{1021200010211} is an apocalyptic number.

1021200010211 is a deficient number, since it is larger than the sum of its proper divisors (4806421).

1021200010211 is an equidigital number, since it uses as much as digits as its factorization.

1021200010211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4806420.

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

Adding to 1021200010211 its reverse (1120100021201), we get a palindrome (2141300031412).

The spelling of 1021200010211 in words is "one trillion, twenty-one billion, two hundred million, ten thousand, two hundred eleven".