1021122312211 has 4 divisors (see below), whose sum is σ = 1022526882832. Its totient is φ = 1019717741592.

The previous prime is 1021122312149. The next prime is 1021122312289. The reversal of 1021122312211 is 1122132211201.

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 1021122312211 - 2¹³ = 1021122304019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021122312311) 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, 702284220 + ... + 702285673.

It is an arithmetic number, because the mean of its divisors is an integer number (255631720708).

Almost surely, 2^{1021122312211} is an apocalyptic number.

1021122312211 is a deficient number, since it is larger than the sum of its proper divisors (1404570621).

1021122312211 is an equidigital number, since it uses as much as digits as its factorization.

1021122312211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404570620.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1021122312211 its reverse (1122132211201), we get a palindrome (2143254523412).

The spelling of 1021122312211 in words is "one trillion, twenty-one billion, one hundred twenty-two million, three hundred twelve thousand, two hundred eleven".