1220211011210 has 8 divisors (see below), whose sum is σ = 2196379820196. Its totient is φ = 488084404480.

The previous prime is 1220211011191. The next prime is 1220211011221. The reversal of 1220211011210 is 121101120221.

It can be written as a sum of positive squares in 2 ways, for example, as 1198103187241 + 22107823969 = 1094579^2 + 148687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61010550551 + ... + 61010550570.

Almost surely, 2^{1220211011210} is an apocalyptic number.

1220211011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220211011210 is a deficient number, since it is larger than the sum of its proper divisors (976168808986).

1220211011210 is a wasteful number, since it uses less digits than its factorization.

1220211011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122021101128.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220211011210 its reverse (121101120221), we get a palindrome (1341312131431).

The spelling of 1220211011210 in words is "one trillion, two hundred twenty billion, two hundred eleven million, eleven thousand, two hundred ten".