121420313444 has 6 divisors (see below), whose sum is σ = 212485548534. Its totient is φ = 60710156720.

The previous prime is 121420313423. The next prime is 121420313459. The reversal of 121420313444 is 444313024121.

It can be written as a sum of positive squares in only one way, i.e., 78036422500 + 43383890944 = 279350^2 + 208288^2 .

It is a super-2 number, since 2×121420313444² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15177539177 + ... + 15177539184.

It is an arithmetic number, because the mean of its divisors is an integer number (35414258089).

Almost surely, 2^121420313444 is an apocalyptic number.

It is an amenable number.

121420313444 is a deficient number, since it is larger than the sum of its proper divisors (91065235090).

121420313444 is a wasteful number, since it uses less digits than its factorization.

121420313444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30355078365 (or 30355078363 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 121420313444 its reverse (444313024121), we get a palindrome (565733337565).

The spelling of 121420313444 in words is "one hundred twenty-one billion, four hundred twenty million, three hundred thirteen thousand, four hundred forty-four".