1021022122211 has 12 divisors (see below), whose sum is σ = 1263547243152. Its totient is φ = 807841678176.

The previous prime is 1021022122199. The next prime is 1021022122243. The reversal of 1021022122211 is 1122212201201.

It is not a de Polignac number, because 1021022122211 - 2⁶ = 1021022122147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021022122211.

It is not an unprimeable number, because it can be changed into a prime (1021022122291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431538176 + ... + 431540541.

It is an arithmetic number, because the mean of its divisors is an integer number (105295603596).

Almost surely, 2^{1021022122211} is an apocalyptic number.

1021022122211 is a deficient number, since it is larger than the sum of its proper divisors (242525120941).

1021022122211 is an equidigital number, since it uses as much as digits as its factorization.

1021022122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863078750 (or 863078737 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1021022122211 its reverse (1122212201201), we get a palindrome (2143234323412).

The spelling of 1021022122211 in words is "one trillion, twenty-one billion, twenty-two million, one hundred twenty-two thousand, two hundred eleven".