1212221021102 has 16 divisors (see below), whose sum is σ = 2237946500832. Its totient is φ = 479559964320.

The previous prime is 1212221021051. The next prime is 1212221021107. The reversal of 1212221021102 is 2011201222121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212221021107) 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, 3330277349 + ... + 3330277712.

It is an arithmetic number, because the mean of its divisors is an integer number (139871656302).

Almost surely, 2^{1212221021102} is an apocalyptic number.

1212221021102 is a deficient number, since it is larger than the sum of its proper divisors (1025725479730).

1212221021102 is a wasteful number, since it uses less digits than its factorization.

1212221021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660555083.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212221021102 its reverse (2011201222121), we get a palindrome (3223422243223).

The spelling of 1212221021102 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, twenty-one thousand, one hundred two".