1002011101021 has 8 divisors (see below), whose sum is σ = 1145165178240. Its totient is φ = 858859432368.

The previous prime is 1002011101019. The next prime is 1002011101031. The reversal of 1002011101021 is 1201011102001.

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

It is not a de Polignac number, because 1002011101021 - 2¹ = 1002011101019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002011100989 and 1002011101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002011101031) 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, 400680 + ... + 1471246.

It is an arithmetic number, because the mean of its divisors is an integer number (143145647280).

Almost surely, 2^{1002011101021} is an apocalyptic number.

It is an amenable number.

1002011101021 is a deficient number, since it is larger than the sum of its proper divisors (143154077219).

1002011101021 is a wasteful number, since it uses less digits than its factorization.

1002011101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204283.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1002011101021 its reverse (1201011102001), we get a palindrome (2203022203022).

The spelling of 1002011101021 in words is "one trillion, two billion, eleven million, one hundred one thousand, twenty-one".