2002111020021 has 16 divisors (see below), whose sum is σ = 3062706804864. Its totient is φ = 1139611828224.

The previous prime is 2002111019947. The next prime is 2002111020097. The reversal of 2002111020021 is 1200201112002.

It is not a de Polignac number, because 2002111020021 - 2⁹ = 2002111019509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002111019979 and 2002111020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002111120021) 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, 185478300 + ... + 185489093.

It is an arithmetic number, because the mean of its divisors is an integer number (191419175304).

Almost surely, 2^{2002111020021} is an apocalyptic number.

2002111020021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2002111020021 is a deficient number, since it is larger than the sum of its proper divisors (1060595784843).

2002111020021 is a wasteful number, since it uses less digits than its factorization.

2002111020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370967660.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2002111020021 its reverse (1200201112002), we get a palindrome (3202312132023).

The spelling of 2002111020021 in words is "two trillion, two billion, one hundred eleven million, twenty thousand, twenty-one".