1000222020021 has 16 divisors (see below), whose sum is σ = 1613803595904. Its totient is φ = 537934531584.

The previous prime is 1000222020001. The next prime is 1000222020041. The reversal of 1000222020021 is 1200202220001.

1000222020021 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1000222020001) and next prime (1000222020041).

It is not a de Polignac number, because 1000222020021 - 2⁹ = 1000222019509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000222019979 and 1000222020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000222020001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1400870820 + ... + 1400871533.

It is an arithmetic number, because the mean of its divisors is an integer number (100862724744).

Almost surely, 2^{1000222020021} is an apocalyptic number.

It is an amenable number.

1000222020021 is a deficient number, since it is larger than the sum of its proper divisors (613581575883).

1000222020021 is a wasteful number, since it uses less digits than its factorization.

1000222020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801742380.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1000222020021 its reverse (1200202220001), we get a palindrome (2200424240022).

The spelling of 1000222020021 in words is "one trillion, two hundred twenty-two million, twenty thousand, twenty-one".