1212101222 has 4 divisors (see below), whose sum is σ = 1818151836. Its totient is φ = 606050610.

The previous prime is 1212101201. The next prime is 1212101237. The reversal of 1212101222 is 2221012121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2221012121 = 131 ⋅16954291.

It is a junction number, because it is equal to n+sod(n) for n = 1212101197 and 1212101206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303025304 + ... + 303025307.

It is an arithmetic number, because the mean of its divisors is an integer number (454537959).

Almost surely, 2^1212101222 is an apocalyptic number.

1212101222 is a deficient number, since it is larger than the sum of its proper divisors (606050614).

1212101222 is an equidigital number, since it uses as much as digits as its factorization.

1212101222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606050613.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1212101222 is about 34815.2441036969. The cubic root of 1212101222 is about 1066.2187028907.

Adding to 1212101222 its reverse (2221012121), we get a palindrome (3433113343).

The spelling of 1212101222 in words is "one billion, two hundred twelve million, one hundred one thousand, two hundred twenty-two".