1022001021021 has 8 divisors (see below), whose sum is σ = 1362679758720. Its totient is φ = 681328148672.

The previous prime is 1022001020987. The next prime is 1022001021047. The reversal of 1022001021021 is 1201201002201.

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

It is a cyclic number.

It is not a de Polignac number, because 1022001021021 - 2²² = 1021996826717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022001020988 and 1022001021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022001021071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042245 + ... + 1769258.

It is an arithmetic number, because the mean of its divisors is an integer number (170334969840).

Almost surely, 2^{1022001021021} is an apocalyptic number.

It is an amenable number.

1022001021021 is a deficient number, since it is larger than the sum of its proper divisors (340678737699).

1022001021021 is a wasteful number, since it uses less digits than its factorization.

1022001021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2932675.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1022001021021 its reverse (1201201002201), we get a palindrome (2223202023222).

The spelling of 1022001021021 in words is "one trillion, twenty-two billion, one million, twenty-one thousand, twenty-one".