10202020102111 has 4 divisors (see below), whose sum is σ = 10212398556912. Its totient is φ = 10191641647312.

The previous prime is 10202020102063. The next prime is 10202020102123. The reversal of 10202020102111 is 11120102020201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202020102111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10202020102091 and 10202020102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202020102511) 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, 5189225926 + ... + 5189227891.

It is an arithmetic number, because the mean of its divisors is an integer number (2553099639228).

Almost surely, 2^{10202020102111} is an apocalyptic number.

10202020102111 is a deficient number, since it is larger than the sum of its proper divisors (10378454801).

10202020102111 is an equidigital number, since it uses as much as digits as its factorization.

10202020102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10378454800.

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

Adding to 10202020102111 its reverse (11120102020201), we get a palindrome (21322122122312).

The spelling of 10202020102111 in words is "ten trillion, two hundred two billion, twenty million, one hundred two thousand, one hundred eleven".