1001021020022 has 4 divisors (see below), whose sum is σ = 1501531530036. Its totient is φ = 500510510010.

The previous prime is 1001021020019. The next prime is 1001021020037. The reversal of 1001021020022 is 2200201201001.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1001021019985 and 1001021020012.

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, 250255255004 + ... + 250255255007.

It is an arithmetic number, because the mean of its divisors is an integer number (375382882509).

Almost surely, 2^{1001021020022} is an apocalyptic number.

1001021020022 is a deficient number, since it is larger than the sum of its proper divisors (500510510014).

1001021020022 is an equidigital number, since it uses as much as digits as its factorization.

1001021020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500510510013.

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

Adding to 1001021020022 its reverse (2200201201001), we get a palindrome (3201222221023).

The spelling of 1001021020022 in words is "one trillion, one billion, twenty-one million, twenty thousand, twenty-two".