122421543511401 has 128 divisors (see below), whose sum is σ = 198789588480000. Its totient is φ = 74193089702400.

The previous prime is 122421543511391. The next prime is 122421543511403. The reversal of 122421543511401 is 104115345124221.

122421543511401 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 21 + 543 + 51 + 1 + 40 + 1 = 666.

It is not a de Polignac number, because 122421543511401 - 2¹⁷ = 122421543380329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122421543511403) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 398238565 + ... + 398545853.

It is an arithmetic number, because the mean of its divisors is an integer number (1553043660000).

Almost surely, 2^{122421543511401} is an apocalyptic number.

It is an amenable number.

122421543511401 is a deficient number, since it is larger than the sum of its proper divisors (76368044968599).

122421543511401 is a wasteful number, since it uses less digits than its factorization.

122421543511401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307644 (or 307638 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

Adding to 122421543511401 its reverse (104115345124221), we get a palindrome (226536888635622).

The spelling of 122421543511401 in words is "one hundred twenty-two trillion, four hundred twenty-one billion, five hundred forty-three million, five hundred eleven thousand, four hundred one".