1000022020021 has 8 divisors (see below), whose sum is σ = 1023295122080. Its totient is φ = 976749680592.

The previous prime is 1000022020001. The next prime is 1000022020037. The reversal of 1000022020021 is 1200202200001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000022020021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000022020001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3125935 + ... + 3430963.

It is an arithmetic number, because the mean of its divisors is an integer number (127911890260).

Almost surely, 2^{1000022020021} is an apocalyptic number.

It is an amenable number.

1000022020021 is a deficient number, since it is larger than the sum of its proper divisors (23273102059).

1000022020021 is an equidigital number, since it uses as much as digits as its factorization.

1000022020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381315.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1000022020021 its reverse (1200202200001), we get a palindrome (2200224220022).

The spelling of 1000022020021 in words is "one trillion, twenty-two million, twenty thousand, twenty-one".