1002221220111 has 32 divisors (see below), whose sum is σ = 1507453847040. Its totient is φ = 589097038464.

The previous prime is 1002221220083. The next prime is 1002221220127. The reversal of 1002221220111 is 1110221222001.

It is not a de Polignac number, because 1002221220111 - 2⁶ = 1002221220047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002221220911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10282180 + ... + 10379193.

It is an arithmetic number, because the mean of its divisors is an integer number (47107932720).

Almost surely, 2^{1002221220111} is an apocalyptic number.

1002221220111 is a deficient number, since it is larger than the sum of its proper divisors (505232626929).

1002221220111 is a wasteful number, since it uses less digits than its factorization.

1002221220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20661455.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1002221220111 its reverse (1110221222001), we get a palindrome (2112442442112).

The spelling of 1002221220111 in words is "one trillion, two billion, two hundred twenty-one million, two hundred twenty thousand, one hundred eleven".