1000021111222 has 8 divisors (see below), whose sum is σ = 1714321904976. Its totient is φ = 428580476232.

The previous prime is 1000021111183. The next prime is 1000021111261. The reversal of 1000021111222 is 2221111200001.

It is an interprime number because it is at equal distance from previous prime (1000021111183) and next prime (1000021111261).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35715039673 + ... + 35715039700.

It is an arithmetic number, because the mean of its divisors is an integer number (214290238122).

Almost surely, 2^{1000021111222} is an apocalyptic number.

1000021111222 is a deficient number, since it is larger than the sum of its proper divisors (714300793754).

1000021111222 is an equidigital number, since it uses as much as digits as its factorization.

1000021111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71430079382.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1000021111222 its reverse (2221111200001), we get a palindrome (3221132311223).

The spelling of 1000021111222 in words is "one trillion, twenty-one million, one hundred eleven thousand, two hundred twenty-two".