103111211023212 has 384 divisors, whose sum is σ = 298982951866368. Its totient is φ = 27018974822400.

The previous prime is 103111211023157. The next prime is 103111211023217. The reversal of 103111211023212 is 212320112111301.

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

It is not an unprimeable number, because it can be changed into a prime (103111211023217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6267007578 + ... + 6267024030.

It is an arithmetic number, because the mean of its divisors is an integer number (778601437152).

Almost surely, 2^{103111211023212} is an apocalyptic number.

103111211023212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103111211023212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149491475933184).

103111211023212 is an abundant number, since it is smaller than the sum of its proper divisors (195871740843156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103111211023212 is a wasteful number, since it uses less digits than its factorization.

103111211023212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17889 (or 17887 counting only the distinct ones).

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

Adding to 103111211023212 its reverse (212320112111301), we get a palindrome (315431323134513).

The spelling of 103111211023212 in words is "one hundred three trillion, one hundred eleven billion, two hundred eleven million, twenty-three thousand, two hundred twelve".