1021101100211 has 4 divisors (see below), whose sum is σ = 1074843263400. Its totient is φ = 967358937024.

The previous prime is 1021101100199. The next prime is 1021101100223. The reversal of 1021101100211 is 1120011011201.

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 (1021101100199) and next prime (1021101100223).

It is a cyclic number.

It is not a de Polignac number, because 1021101100211 - 2²⁶ = 1021033991347 is a prime.

It is a super-2 number, since 2×1021101100211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021101100192 and 1021101100201.

It is not an unprimeable number, because it can be changed into a prime (1021101100291) 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, 26871081566 + ... + 26871081603.

It is an arithmetic number, because the mean of its divisors is an integer number (268710815850).

Almost surely, 2^{1021101100211} is an apocalyptic number.

1021101100211 is a deficient number, since it is larger than the sum of its proper divisors (53742163189).

1021101100211 is an equidigital number, since it uses as much as digits as its factorization.

1021101100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53742163188.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1021101100211 its reverse (1120011011201), we get a palindrome (2141112111412).

The spelling of 1021101100211 in words is "one trillion, twenty-one billion, one hundred one million, one hundred thousand, two hundred eleven".