1212422210 has 8 divisors (see below), whose sum is σ = 2182359996. Its totient is φ = 484968880.

The previous prime is 1212422191. The next prime is 1212422213. The reversal of 1212422210 is 122242121.

It can be written as a sum of positive squares in 2 ways, for example, as 1091839849 + 120582361 = 33043^2 + 10981^2 .

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 (1212422213) 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, 60621101 + ... + 60621120.

Almost surely, 2^1212422210 is an apocalyptic number.

1212422210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212422210 is a deficient number, since it is larger than the sum of its proper divisors (969937786).

1212422210 is a wasteful number, since it uses less digits than its factorization.

1212422210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121242228.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1212422210 is about 34819.8536757408. The cubic root of 1212422210 is about 1066.3128130734.

Adding to 1212422210 its reverse (122242121), we get a palindrome (1334664331).

The spelling of 1212422210 in words is "one billion, two hundred twelve million, four hundred twenty-two thousand, two hundred ten".