1011021001021 has 8 divisors (see below), whose sum is σ = 1065423769344. Its totient is φ = 957488677200.

The previous prime is 1011021001019. The next prime is 1011021001069. The reversal of 1011021001021 is 1201001201101.

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 1011021001021 - 2¹ = 1011021001019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011021000989 and 1011021001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011021001091) 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, 217608741 + ... + 217613386.

It is an arithmetic number, because the mean of its divisors is an integer number (133177971168).

Almost surely, 2^{1011021001021} is an apocalyptic number.

It is an amenable number.

1011021001021 is a deficient number, since it is larger than the sum of its proper divisors (54402768323).

1011021001021 is a wasteful number, since it uses less digits than its factorization.

1011021001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435222251.

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

Adding to 1011021001021 its reverse (1201001201101), we get a palindrome (2212022202122).

The spelling of 1011021001021 in words is "one trillion, eleven billion, twenty-one million, one thousand, twenty-one".