20101002202111 has 4 divisors (see below), whose sum is σ = 20125308130632. Its totient is φ = 20076696273592.

The previous prime is 20101002202091. The next prime is 20101002202133. The reversal of 20101002202111 is 11120220010102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20101002202111 - 2⁴¹ = 17901978946559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101002202091 and 20101002202100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101002209111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12152963020 + ... + 12152964673.

It is an arithmetic number, because the mean of its divisors is an integer number (5031327032658).

Almost surely, 2^{20101002202111} is an apocalyptic number.

20101002202111 is a deficient number, since it is larger than the sum of its proper divisors (24305928521).

20101002202111 is an equidigital number, since it uses as much as digits as its factorization.

20101002202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24305928520.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20101002202111 its reverse (11120220010102), we get a palindrome (31221222212213).

The spelling of 20101002202111 in words is "twenty trillion, one hundred one billion, two million, two hundred two thousand, one hundred eleven".