1011222100211 has 4 divisors (see below), whose sum is σ = 1013933151792. Its totient is φ = 1008511048632.

The previous prime is 1011222100199. The next prime is 1011222100223. The reversal of 1011222100211 is 1120012221101.

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

It is an interprime number because it is at equal distance from previous prime (1011222100199) and next prime (1011222100223).

It is a cyclic number.

It is not a de Polignac number, because 1011222100211 - 2³⁴ = 994042231027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011222103211) 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, 1355525231 + ... + 1355525976.

It is an arithmetic number, because the mean of its divisors is an integer number (253483287948).

Almost surely, 2^{1011222100211} is an apocalyptic number.

1011222100211 is a deficient number, since it is larger than the sum of its proper divisors (2711051581).

1011222100211 is an equidigital number, since it uses as much as digits as its factorization.

1011222100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711051580.

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

Adding to 1011222100211 its reverse (1120012221101), we get a palindrome (2131234321312).

It can be divided in two parts, 1011 and 222100211, that added together give a palindrome (222101222).

The spelling of 1011222100211 in words is "one trillion, eleven billion, two hundred twenty-two million, one hundred thousand, two hundred eleven".