1001020102021 has 8 divisors (see below), whose sum is σ = 1082454779520. Its totient is φ = 922091107008.

The previous prime is 1001020102007. The next prime is 1001020102039. The reversal of 1001020102021 is 1202010201001.

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 1001020102021 - 2⁵ = 1001020101989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001020101989 and 1001020102007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001020102091) 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, 626419791 + ... + 626421388.

It is an arithmetic number, because the mean of its divisors is an integer number (135306847440).

Almost surely, 2^{1001020102021} is an apocalyptic number.

It is an amenable number.

1001020102021 is a deficient number, since it is larger than the sum of its proper divisors (81434677499).

1001020102021 is a wasteful number, since it uses less digits than its factorization.

1001020102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252841243.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1001020102021 its reverse (1202010201001), we get a palindrome (2203030303022).

The spelling of 1001020102021 in words is "one trillion, one billion, twenty million, one hundred two thousand, twenty-one".