1212221122102 has 4 divisors (see below), whose sum is σ = 1818331683156. Its totient is φ = 606110561050.

The previous prime is 1212221122069. The next prime is 1212221122103. The reversal of 1212221122102 is 2012211222121.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1212221122102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212221122103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303055280524 + ... + 303055280527.

It is an arithmetic number, because the mean of its divisors is an integer number (454582920789).

Almost surely, 2^{1212221122102} is an apocalyptic number.

1212221122102 is a deficient number, since it is larger than the sum of its proper divisors (606110561054).

1212221122102 is an equidigital number, since it uses as much as digits as its factorization.

1212221122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606110561053.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1212221122102 its reverse (2012211222121), we get a palindrome (3224432344223).

The spelling of 1212221122102 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred two".