1021222222211 has 12 divisors (see below), whose sum is σ = 1033887751872. Its totient is φ = 1008705180000.

The previous prime is 1021222222183. The next prime is 1021222222231. The reversal of 1021222222211 is 1122222221201.

It is not a de Polignac number, because 1021222222211 - 2¹⁴ = 1021222205827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021222222231) 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, 4175726 + ... + 4413516.

It is an arithmetic number, because the mean of its divisors is an integer number (86157312656).

Almost surely, 2^{1021222222211} is an apocalyptic number.

1021222222211 is a deficient number, since it is larger than the sum of its proper divisors (12665529661).

1021222222211 is an equidigital number, since it uses as much as digits as its factorization.

1021222222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238414 (or 238313 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1021222222211 its reverse (1122222221201), we get a palindrome (2143444443412).

The spelling of 1021222222211 in words is "one trillion, twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred eleven".