103111212213220 has 96 divisors (see below), whose sum is σ = 220219890954336. Its totient is φ = 40548438528000.

The previous prime is 103111212213193. The next prime is 103111212213277. The reversal of 103111212213220 is 22312212111301.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 347673316 + 103110864539904 = 18646^2 + 10154352^2 .

It is a junction number, because it is equal to n+sod(n) for n = 103111212213191 and 103111212213200.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469574574 + ... + 469794106.

It is an arithmetic number, because the mean of its divisors is an integer number (2293957197441).

Almost surely, 2^{103111212213220} is an apocalyptic number.

103111212213220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103111212213220 is an abundant number, since it is smaller than the sum of its proper divisors (117108678741116).

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

103111212213220 is a wasteful number, since it uses less digits than its factorization.

103111212213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221281 (or 221279 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 103111212213220 its reverse (22312212111301), we get a palindrome (125423424324521).

The spelling of 103111212213220 in words is "one hundred three trillion, one hundred eleven billion, two hundred twelve million, two hundred thirteen thousand, two hundred twenty".