1002100001222 has 4 divisors (see below), whose sum is σ = 1503150001836. Its totient is φ = 501050000610.

The previous prime is 1002100001219. The next prime is 1002100001263. The reversal of 1002100001222 is 2221000012001.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250525000304 + ... + 250525000307.

It is an arithmetic number, because the mean of its divisors is an integer number (375787500459).

Almost surely, 2^{1002100001222} is an apocalyptic number.

1002100001222 is a deficient number, since it is larger than the sum of its proper divisors (501050000614).

1002100001222 is an equidigital number, since it uses as much as digits as its factorization.

1002100001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501050000613.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1002100001222 its reverse (2221000012001), we get a palindrome (3223100013223).

The spelling of 1002100001222 in words is "one trillion, two billion, one hundred million, one thousand, two hundred twenty-two".