2011212121103 has 32 divisors (see below), whose sum is σ = 2216416426560. Its totient is φ = 1816495349760.

The previous prime is 2011212121097. The next prime is 2011212121109. The reversal of 2011212121103 is 3011212121102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2011212121097) and next prime (2011212121109).

It is not a de Polignac number, because 2011212121103 - 2³⁰ = 2010138379279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011212121109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53526443 + ... + 53564003.

It is an arithmetic number, because the mean of its divisors is an integer number (69263013330).

Almost surely, 2^{2011212121103} is an apocalyptic number.

2011212121103 is a deficient number, since it is larger than the sum of its proper divisors (205204305457).

2011212121103 is a wasteful number, since it uses less digits than its factorization.

2011212121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38267.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2011212121103 its reverse (3011212121102), we get a palindrome (5022424242205).

Subtracting 2011212121103 from its reverse (3011212121102), we obtain a palindrome (999999999999).

The spelling of 2011212121103 in words is "two trillion, eleven billion, two hundred twelve million, one hundred twenty-one thousand, one hundred three".