1222211212210 has 32 divisors (see below), whose sum is σ = 2205235730880. Its totient is φ = 487717106112.

The previous prime is 1222211212147. The next prime is 1222211212249. The reversal of 1222211212210 is 122121122221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20232972 + ... + 20293288.

It is an arithmetic number, because the mean of its divisors is an integer number (68913616590).

Almost surely, 2^{1222211212210} is an apocalyptic number.

1222211212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222211212210 is a deficient number, since it is larger than the sum of its proper divisors (983024518670).

1222211212210 is a wasteful number, since it uses less digits than its factorization.

1222211212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65130.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1222211212210 its reverse (122121122221), we get a palindrome (1344332334431).

The spelling of 1222211212210 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, two hundred twelve thousand, two hundred ten".