1211213322102 has 16 divisors (see below), whose sum is σ = 2768487593472. Its totient is φ = 346060949160.

The previous prime is 1211213322091. The next prime is 1211213322107. The reversal of 1211213322102 is 2012233121121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211213322107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14419206174 + ... + 14419206257.

It is an arithmetic number, because the mean of its divisors is an integer number (173030474592).

Almost surely, 2^{1211213322102} is an apocalyptic number.

1211213322102 is an abundant number, since it is smaller than the sum of its proper divisors (1557274271370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211213322102 is a wasteful number, since it uses less digits than its factorization.

1211213322102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28838412443.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1211213322102 its reverse (2012233121121), we get a palindrome (3223446443223).

The spelling of 1211213322102 in words is "one trillion, two hundred eleven billion, two hundred thirteen million, three hundred twenty-two thousand, one hundred two".