121204144402 has 16 divisors (see below), whose sum is σ = 198351739872. Its totient is φ = 55087880320.

The previous prime is 121204144357. The next prime is 121204144409. The reversal of 121204144402 is 204441402121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121204144409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12738 + ... + 492514.

It is an arithmetic number, because the mean of its divisors is an integer number (12396983742).

Almost surely, 2^121204144402 is an apocalyptic number.

121204144402 is a deficient number, since it is larger than the sum of its proper divisors (77147595470).

121204144402 is a wasteful number, since it uses less digits than its factorization.

121204144402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491273.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 121204144402 its reverse (204441402121), we get a palindrome (325645546523).

The spelling of 121204144402 in words is "one hundred twenty-one billion, two hundred four million, one hundred forty-four thousand, four hundred two".