1000222212021 has 32 divisors (see below), whose sum is σ = 1355522488320. Its totient is φ = 655965584064.

The previous prime is 1000222211999. The next prime is 1000222212071. The reversal of 1000222212021 is 1202122220001.

It is not a de Polignac number, because 1000222212021 - 2⁷ = 1000222211893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000222212071) 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, 48209376 + ... + 48230118.

It is an arithmetic number, because the mean of its divisors is an integer number (42360077760).

Almost surely, 2^{1000222212021} is an apocalyptic number.

It is an amenable number.

1000222212021 is a deficient number, since it is larger than the sum of its proper divisors (355300276299).

1000222212021 is a wasteful number, since it uses less digits than its factorization.

1000222212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21905.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1000222212021 its reverse (1202122220001), we get a palindrome (2202344432022).

The spelling of 1000222212021 in words is "one trillion, two hundred twenty-two million, two hundred twelve thousand, twenty-one".