121210222012 has 36 divisors (see below), whose sum is σ = 241194207240. Its totient is φ = 53195702560.

The previous prime is 121210221967. The next prime is 121210222061. The reversal of 121210222012 is 210222012121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4303798 + ... + 4331869.

It is an arithmetic number, because the mean of its divisors is an integer number (6699839090).

Almost surely, 2^121210222012 is an apocalyptic number.

It is an amenable number.

121210222012 is a deficient number, since it is larger than the sum of its proper divisors (119983985228).

121210222012 is a wasteful number, since it uses less digits than its factorization.

121210222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8635722 (or 8635709 counting only the distinct ones).

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

Adding to 121210222012 its reverse (210222012121), we get a palindrome (331432234133).

It can be divided in two parts, 121 and 210222012, that multiplied together give a palindrome (25436863452).

The spelling of 121210222012 in words is "one hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, twelve".