10210221121111 has 4 divisors (see below), whose sum is σ = 11138423041224. Its totient is φ = 9282019201000.

The previous prime is 10210221121091. The next prime is 10210221121151. The reversal of 10210221121111 is 11112112201201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10210221121111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210221121151) 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, 464100960040 + ... + 464100960061.

It is an arithmetic number, because the mean of its divisors is an integer number (2784605760306).

Almost surely, 2^{10210221121111} is an apocalyptic number.

10210221121111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10210221121111 is a deficient number, since it is larger than the sum of its proper divisors (928201920113).

10210221121111 is an equidigital number, since it uses as much as digits as its factorization.

10210221121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928201920112.

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

Adding to 10210221121111 its reverse (11112112201201), we get a palindrome (21322333322312).

The spelling of 10210221121111 in words is "ten trillion, two hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred eleven".