1211222212030 has 16 divisors (see below), whose sum is σ = 2180212667280. Its totient is φ = 484486065792.

The previous prime is 1211222212019. The next prime is 1211222212037. The reversal of 1211222212030 is 302122221121.

It is a junction number, because it is equal to n+sod(n) for n = 1211222211989 and 1211222212007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211222212037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2767897 + ... + 3175483.

It is an arithmetic number, because the mean of its divisors is an integer number (136263291705).

Almost surely, 2^{1211222212030} is an apocalyptic number.

1211222212030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211222212030 is a deficient number, since it is larger than the sum of its proper divisors (968990455250).

1211222212030 is a wasteful number, since it uses less digits than its factorization.

1211222212030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704763.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1211222212030 its reverse (302122221121), we get a palindrome (1513344433151).

Subtracting from 1211222212030 its reverse (302122221121), we obtain a palindrome (909099990909).

The spelling of 1211222212030 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twelve thousand, thirty".