1021122100211 has 4 divisors (see below), whose sum is σ = 1021128824352. Its totient is φ = 1021115376072.

The previous prime is 1021122100177. The next prime is 1021122100247. The reversal of 1021122100211 is 1120012211201.

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 1021122100211 - 2¹⁸ = 1021121838067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021122100261) 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, 3128891 + ... + 3439796.

It is an arithmetic number, because the mean of its divisors is an integer number (255282206088).

Almost surely, 2^{1021122100211} is an apocalyptic number.

1021122100211 is a deficient number, since it is larger than the sum of its proper divisors (6724141).

1021122100211 is an equidigital number, since it uses as much as digits as its factorization.

1021122100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724140.

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

Adding to 1021122100211 its reverse (1120012211201), we get a palindrome (2141134311412).

The spelling of 1021122100211 in words is "one trillion, twenty-one billion, one hundred twenty-two million, one hundred thousand, two hundred eleven".