121222201012 has 72 divisors (see below), whose sum is σ = 236426891400. Its totient is φ = 54337536000.

The previous prime is 121222201007. The next prime is 121222201057. The reversal of 121222201012 is 210102222121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 61125639696 + 60096561316 = 247236^2 + 245146^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12558364 + ... + 12568012.

It is an arithmetic number, because the mean of its divisors is an integer number (3283706825).

Almost surely, 2^121222201012 is an apocalyptic number.

It is an amenable number.

121222201012 is a deficient number, since it is larger than the sum of its proper divisors (115204690388).

121222201012 is a wasteful number, since it uses less digits than its factorization.

121222201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10033 (or 10020 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121222201012 its reverse (210102222121), we get a palindrome (331324423133).

The spelling of 121222201012 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred one thousand, twelve".