121444440102 has 32 divisors (see below), whose sum is σ = 272496706560. Its totient is φ = 40088454120.

The previous prime is 121444440097. The next prime is 121444440107. The reversal of 121444440102 is 201044444121.

It is a happy number.

121444440102 is a `hidden beast` number, since 1 + 214 + 4 + 4 + 440 + 1 + 0 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (121444440097) and next prime (121444440107).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121444440107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10911774 + ... + 10922897.

It is an arithmetic number, because the mean of its divisors is an integer number (8515522080).

Almost surely, 2^121444440102 is an apocalyptic number.

121444440102 is an abundant number, since it is smaller than the sum of its proper divisors (151052266458).

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

121444440102 is a wasteful number, since it uses less digits than its factorization.

121444440102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21834785 (or 21834779 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 121444440102 its reverse (201044444121), we get a palindrome (322488884223).

The spelling of 121444440102 in words is "one hundred twenty-one billion, four hundred forty-four million, four hundred forty thousand, one hundred two".