1212222202210 has 8 divisors (see below), whose sum is σ = 2181999963996. Its totient is φ = 484888880880.

The previous prime is 1212222202201. The next prime is 1212222202211. The reversal of 1212222202210 is 122022222121.

It can be written as a sum of positive squares in 2 ways, for example, as 984169154809 + 228053047401 = 992053^2 + 477549^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1212222202211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60611110101 + ... + 60611110120.

Almost surely, 2^{1212222202210} is an apocalyptic number.

1212222202210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212222202210 is a deficient number, since it is larger than the sum of its proper divisors (969777761786).

1212222202210 is a wasteful number, since it uses less digits than its factorization.

1212222202210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121222220228.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1212222202210 its reverse (122022222121), we get a palindrome (1334244424331).

The spelling of 1212222202210 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, two hundred two thousand, two hundred ten".