12111011210 has 16 divisors (see below), whose sum is σ = 21809579616. Its totient is φ = 4842235728.

The previous prime is 12111011201. The next prime is 12111011221. The reversal of 12111011210 is 1211011121.

It is a junction number, because it is equal to n+sod(n) for n = 12111011191 and 12111011200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247544 + ... + 292403.

It is an arithmetic number, because the mean of its divisors is an integer number (1363098726).

Almost surely, 2^12111011210 is an apocalyptic number.

12111011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111011210 is a deficient number, since it is larger than the sum of its proper divisors (9698568406).

12111011210 is a wasteful number, since it uses less digits than its factorization.

12111011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542197.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12111011210 its reverse (1211011121), we get a palindrome (13322022331).

The spelling of 12111011210 in words is "twelve billion, one hundred eleven million, eleven thousand, two hundred ten".