1111122221210 has 32 divisors (see below), whose sum is σ = 2004010968960. Its totient is φ = 443562452032.

The previous prime is 1111122221177. The next prime is 1111122221213. The reversal of 1111122221210 is 121222211111.

It is not an unprimeable number, because it can be changed into a prime (1111122221213) 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, 21558251 + ... + 21609729.

It is an arithmetic number, because the mean of its divisors is an integer number (62625342780).

Almost surely, 2^{1111122221210} is an apocalyptic number.

1111122221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111122221210 is a deficient number, since it is larger than the sum of its proper divisors (892888747750).

1111122221210 is a wasteful number, since it uses less digits than its factorization.

1111122221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55750.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1111122221210 its reverse (121222211111), we get a palindrome (1232344432321).

The spelling of 1111122221210 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred ten".