121204211442 has 32 divisors (see below), whose sum is σ = 247511339712. Its totient is φ = 39554184384.

The previous prime is 121204211431. The next prime is 121204211467. The reversal of 121204211442 is 244112402121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259573 + ... + 556584.

It is an arithmetic number, because the mean of its divisors is an integer number (7734729366).

Almost surely, 2^121204211442 is an apocalyptic number.

121204211442 is an abundant number, since it is smaller than the sum of its proper divisors (126307128270).

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

121204211442 is a wasteful number, since it uses less digits than its factorization.

121204211442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816682.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 121204211442 its reverse (244112402121), we get a palindrome (365316613563).

The spelling of 121204211442 in words is "one hundred twenty-one billion, two hundred four million, two hundred eleven thousand, four hundred forty-two".