1021002002011 has 16 divisors (see below), whose sum is σ = 1058021098848. Its totient is φ = 984481344000.

The previous prime is 1021002001991. The next prime is 1021002002057. The reversal of 1021002002011 is 1102002001201.

It is a cyclic number.

It is not a de Polignac number, because 1021002002011 - 2⁵ = 1021002001979 is a prime.

It is a super-2 number, since 2×1021002002011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021002002411) 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, 45064036 + ... + 45086686.

It is an arithmetic number, because the mean of its divisors is an integer number (66126318678).

Almost surely, 2^{1021002002011} is an apocalyptic number.

1021002002011 is a deficient number, since it is larger than the sum of its proper divisors (37019096837).

1021002002011 is a wasteful number, since it uses less digits than its factorization.

1021002002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33582.

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

Adding to 1021002002011 its reverse (1102002001201), we get a palindrome (2123004003212).

The spelling of 1021002002011 in words is "one trillion, twenty-one billion, two million, two thousand, eleven".