1002021122021 has 8 divisors (see below), whose sum is σ = 1007544582720. Its totient is φ = 996508114272.

The previous prime is 1002021121967. The next prime is 1002021122023. The reversal of 1002021122021 is 1202211202001.

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 1002021122021 - 2¹⁴ = 1002021105637 is a prime.

It is a super-2 number, since 2×1002021122021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002021121987 and 1002021122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002021122023) 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, 2420951 + ... + 2804468.

It is an arithmetic number, because the mean of its divisors is an integer number (125943072840).

Almost surely, 2^{1002021122021} is an apocalyptic number.

It is an amenable number.

1002021122021 is a deficient number, since it is larger than the sum of its proper divisors (5523460699).

1002021122021 is an equidigital number, since it uses as much as digits as its factorization.

1002021122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226475.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1002021122021 its reverse (1202211202001), we get a palindrome (2204232324022).

The spelling of 1002021122021 in words is "one trillion, two billion, twenty-one million, one hundred twenty-two thousand, twenty-one".