1000021031122 has 4 divisors (see below), whose sum is σ = 1500031546686. Its totient is φ = 500010515560.

The previous prime is 1000021031083. The next prime is 1000021031147. The reversal of 1000021031122 is 2211301200001.

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

It can be written as a sum of positive squares in only one way, i.e., 993093964681 + 6927066441 = 996541^2 + 83229^2 .

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 as a sum of consecutive naturals, namely, 250005257779 + ... + 250005257782.

Almost surely, 2^{1000021031122} is an apocalyptic number.

1000021031122 is a deficient number, since it is larger than the sum of its proper divisors (500010515564).

1000021031122 is an equidigital number, since it uses as much as digits as its factorization.

1000021031122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500010515563.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1000021031122 its reverse (2211301200001), we get a palindrome (3211322231123).

The spelling of 1000021031122 in words is "one trillion, twenty-one million, thirty-one thousand, one hundred twenty-two".