121441221251756 has 36 divisors (see below), whose sum is σ = 248856845123376. Its totient is φ = 51701560596000.

The previous prime is 121441221251731. The next prime is 121441221251761. The reversal of 121441221251756 is 657152122144121.

It is a happy number.

121441221251756 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2051619635 + ... + 2051678826.

It is an arithmetic number, because the mean of its divisors is an integer number (6912690142316).

Almost surely, 2^{121441221251756} is an apocalyptic number.

It is an amenable number.

121441221251756 is an abundant number, since it is smaller than the sum of its proper divisors (127415623871620).

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

121441221251756 is a wasteful number, since it uses less digits than its factorization.

121441221251756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103298630 (or 4103298621 counting only the distinct ones).

The product of its digits is 268800, while the sum is 44.

Adding to 121441221251756 its reverse (657152122144121), we get a palindrome (778593343395877).

The spelling of 121441221251756 in words is "one hundred twenty-one trillion, four hundred forty-one billion, two hundred twenty-one million, two hundred fifty-one thousand, seven hundred fifty-six".