1021102201111 has 4 divisors (see below), whose sum is σ = 1054040981824. Its totient is φ = 988163420400.

The previous prime is 1021102201081. The next prime is 1021102201117. The reversal of 1021102201111 is 1111022011201.

It is a happy number.

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 1021102201111 - 2³⁹ = 471346387223 is a prime.

It is a super-2 number, since 2×1021102201111² (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 = 1021102201091 and 1021102201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021102201117) 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, 16469390310 + ... + 16469390371.

It is an arithmetic number, because the mean of its divisors is an integer number (263510245456).

Almost surely, 2^{1021102201111} is an apocalyptic number.

1021102201111 is a deficient number, since it is larger than the sum of its proper divisors (32938780713).

1021102201111 is an equidigital number, since it uses as much as digits as its factorization.

1021102201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32938780712.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1021102201111 its reverse (1111022011201), we get a palindrome (2132124212312).

The spelling of 1021102201111 in words is "one trillion, twenty-one billion, one hundred two million, two hundred one thousand, one hundred eleven".