1211122222010 has 64 divisors (see below), whose sum is σ = 2281293894528. Its totient is φ = 462569232384.

The previous prime is 1211122221983. The next prime is 1211122222019. The reversal of 1211122222010 is 102222211121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211122222010.

It is not an unprimeable number, because it can be changed into a prime (1211122222019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3376349 + ... + 3717791.

It is an arithmetic number, because the mean of its divisors is an integer number (35645217102).

Almost surely, 2^{1211122222010} is an apocalyptic number.

1211122222010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211122222010 is a deficient number, since it is larger than the sum of its proper divisors (1070171672518).

1211122222010 is a wasteful number, since it uses less digits than its factorization.

1211122222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341679.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1211122222010 its reverse (102222211121), we get a palindrome (1313344433131).

The spelling of 1211122222010 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, ten".