10221111203111 has 4 divisors (see below), whose sum is σ = 10388670403224. Its totient is φ = 10053552003000.

The previous prime is 10221111203081. The next prime is 10221111203117. The reversal of 10221111203111 is 11130211112201.

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

It is a cyclic number.

It is not a de Polignac number, because 10221111203111 - 2¹⁸ = 10221110940967 is a prime.

It is a super-2 number, since 2×10221111203111² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10221111203111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221111203117) 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, 83779599965 + ... + 83779600086.

It is an arithmetic number, because the mean of its divisors is an integer number (2597167600806).

Almost surely, 2^{10221111203111} is an apocalyptic number.

10221111203111 is a deficient number, since it is larger than the sum of its proper divisors (167559200113).

10221111203111 is an equidigital number, since it uses as much as digits as its factorization.

10221111203111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167559200112.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 10221111203111 its reverse (11130211112201), we get a palindrome (21351322315312).

It can be divided in two parts, 1022111 and 1203111, that added together give a palindrome (2225222).

The spelling of 10221111203111 in words is "ten trillion, two hundred twenty-one billion, one hundred eleven million, two hundred three thousand, one hundred eleven".