1211222301102 has 112 divisors (see below), whose sum is σ = 2996204612400. Its totient is φ = 367036472880.

The previous prime is 1211222301083. The next prime is 1211222301109. The reversal of 1211222301102 is 2011032221121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211222301109) 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 55 ways as a sum of consecutive naturals, for example, 1628524 + ... + 2252672.

Almost surely, 2^{1211222301102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211222301102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1498102306200).

1211222301102 is an abundant number, since it is smaller than the sum of its proper divisors (1784982311298).

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

1211222301102 is an frugal number, since it uses more digits than its factorization.

1211222301102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624202 (or 624165 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1211222301102 its reverse (2011032221121), we get a palindrome (3222254522223).

The spelling of 1211222301102 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, three hundred one thousand, one hundred two".