121211401421044 has 24 divisors (see below), whose sum is σ = 245015560093248. Its totient is φ = 51855144992640.

The previous prime is 121211401421039. The next prime is 121211401421147. The reversal of 121211401421044 is 440124104112121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81023663304 + ... + 81023664799.

It is an arithmetic number, because the mean of its divisors is an integer number (10208981670552).

Almost surely, 2^{121211401421044} is an apocalyptic number.

It is an amenable number.

121211401421044 is an abundant number, since it is smaller than the sum of its proper divisors (123804158672204).

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

121211401421044 is a wasteful number, since it uses less digits than its factorization.

121211401421044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162047328135 (or 162047328133 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

Adding to 121211401421044 its reverse (440124104112121), we get a palindrome (561335505533165).

The spelling of 121211401421044 in words is "one hundred twenty-one trillion, two hundred eleven billion, four hundred one million, four hundred twenty-one thousand, forty-four".