1001021002111 has 16 divisors (see below), whose sum is σ = 1080664200000. Its totient is φ = 921756100608.

The previous prime is 1001021002109. The next prime is 1001021002129. The reversal of 1001021002111 is 1112001201001.

It is a cyclic number.

It is not a de Polignac number, because 1001021002111 - 2¹ = 1001021002109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001021002151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30318390 + ... + 30351388.

It is an arithmetic number, because the mean of its divisors is an integer number (67541512500).

Almost surely, 2^{1001021002111} is an apocalyptic number.

1001021002111 is a deficient number, since it is larger than the sum of its proper divisors (79643197889).

1001021002111 is a wasteful number, since it uses less digits than its factorization.

1001021002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38658.

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

Adding to 1001021002111 its reverse (1112001201001), we get a palindrome (2113022203112).

The spelling of 1001021002111 in words is "one trillion, one billion, twenty-one million, two thousand, one hundred eleven".