103111213212021 has 16 divisors (see below), whose sum is σ = 157826430992384. Its totient is φ = 58656474905904.

The previous prime is 103111213211983. The next prime is 103111213212031. The reversal of 103111213212021 is 120212312111301.

It is not a de Polignac number, because 103111213212021 - 2²² = 103111209017717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103111213212031) 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, 11009093461 + ... + 11009102826.

It is an arithmetic number, because the mean of its divisors is an integer number (9864151937024).

Almost surely, 2^{103111213212021} is an apocalyptic number.

It is an amenable number.

103111213212021 is a deficient number, since it is larger than the sum of its proper divisors (54715217780363).

103111213212021 is a wasteful number, since it uses less digits than its factorization.

103111213212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22018196520.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 103111213212021 its reverse (120212312111301), we get a palindrome (223323525323322).

The spelling of 103111213212021 in words is "one hundred three trillion, one hundred eleven billion, two hundred thirteen million, two hundred twelve thousand, twenty-one".