20003102111 has 4 divisors (see below), whose sum is σ = 20342137800. Its totient is φ = 19664066424.

The previous prime is 20003102101. The next prime is 20003102117. The reversal of 20003102111 is 11120130002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11120130002 = 2 ⋅5560065001.

It is a cyclic number.

It is not a de Polignac number, because 20003102111 - 2²² = 19998907807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20003102092 and 20003102101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003102117) 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, 169517756 + ... + 169517873.

It is an arithmetic number, because the mean of its divisors is an integer number (5085534450).

Almost surely, 2^20003102111 is an apocalyptic number.

20003102111 is a deficient number, since it is larger than the sum of its proper divisors (339035689).

20003102111 is an equidigital number, since it uses as much as digits as its factorization.

20003102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339035688.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20003102111 its reverse (11120130002), we get a palindrome (31123232113).

The spelling of 20003102111 in words is "twenty billion, three million, one hundred two thousand, one hundred eleven".