1020002022221 has 32 divisors (see below), whose sum is σ = 1321942191360. Its totient is φ = 764280147456.

The previous prime is 1020002022211. The next prime is 1020002022307. The reversal of 1020002022221 is 1222202000201.

It is not a de Polignac number, because 1020002022221 - 2⁶ = 1020002022157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020002022196 and 1020002022205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020002022211) 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, 4695215 + ... + 4907651.

It is an arithmetic number, because the mean of its divisors is an integer number (41310693480).

Almost surely, 2^{1020002022221} is an apocalyptic number.

It is an amenable number.

1020002022221 is a deficient number, since it is larger than the sum of its proper divisors (301940169139).

1020002022221 is a wasteful number, since it uses less digits than its factorization.

1020002022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215253.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1020002022221 its reverse (1222202000201), we get a palindrome (2242204022422).

The spelling of 1020002022221 in words is "one trillion, twenty billion, two million, twenty-two thousand, two hundred twenty-one".