121444202141020 has 96 divisors (see below), whose sum is σ = 279144201563136. Its totient is φ = 44014485273600.

The previous prime is 121444202140967. The next prime is 121444202141021. The reversal of 121444202141020 is 20141202444121.

It is a self number, because there is not a number n which added to its sum of digits gives 121444202141020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121444202141021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 625056409 + ... + 625250671.

It is an arithmetic number, because the mean of its divisors is an integer number (2907752099616).

Almost surely, 2^{121444202141020} is an apocalyptic number.

121444202141020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121444202141020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139572100781568).

121444202141020 is an abundant number, since it is smaller than the sum of its proper divisors (157699999422116).

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

121444202141020 is a wasteful number, since it uses less digits than its factorization.

121444202141020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203731 (or 203729 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

Adding to 121444202141020 its reverse (20141202444121), we get a palindrome (141585404585141).

The spelling of 121444202141020 in words is "one hundred twenty-one trillion, four hundred forty-four billion, two hundred two million, one hundred forty-one thousand, twenty".