121442144377 has 2 divisors, whose sum is σ = 121442144378. Its totient is φ = 121442144376.

The previous prime is 121442144363. The next prime is 121442144441. The reversal of 121442144377 is 773441244121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62614552441 + 58827591936 = 250229^2 + 242544^2 .

It is a cyclic number.

It is not a de Polignac number, because 121442144377 - 2¹¹ = 121442142329 is a prime.

It is a super-2 number, since 2×121442144377² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121442144347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60721072188 + 60721072189.

It is an arithmetic number, because the mean of its divisors is an integer number (60721072189).

Almost surely, 2^121442144377 is an apocalyptic number.

It is an amenable number.

121442144377 is a deficient number, since it is larger than the sum of its proper divisors (1).

121442144377 is an equidigital number, since it uses as much as digits as its factorization.

121442144377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 40.

Adding to 121442144377 its reverse (773441244121), we get a palindrome (894883388498).

The spelling of 121442144377 in words is "one hundred twenty-one billion, four hundred forty-two million, one hundred forty-four thousand, three hundred seventy-seven".