1222121301012 has 36 divisors (see below), whose sum is σ = 3195776968020. Its totient is φ = 393326395392.

The previous prime is 1222121301007. The next prime is 1222121301019. The reversal of 1222121301012 is 2101031212221.

It can be written as a sum of positive squares in 2 ways, for example, as 974630970756 + 247490330256 = 987234^2 + 497484^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 (1222121301019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 585306093 + ... + 585308180.

It is an arithmetic number, because the mean of its divisors is an integer number (88771582445).

Almost surely, 2^{1222121301012} is an apocalyptic number.

1222121301012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222121301012 is an abundant number, since it is smaller than the sum of its proper divisors (1973655667008).

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

1222121301012 is a wasteful number, since it uses less digits than its factorization.

1222121301012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170614312 (or 1170614307 counting only the distinct ones).

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

Adding to 1222121301012 its reverse (2101031212221), we get a palindrome (3323152513233).

The spelling of 1222121301012 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, three hundred one thousand, twelve".