140121005502401 has 16 divisors (see below), whose sum is σ = 174945528770688. Its totient is φ = 109029442704000.

The previous prime is 140121005502389. The next prime is 140121005502433. The reversal of 140121005502401 is 104205500121041.

It is a happy number.

It is not a de Polignac number, because 140121005502401 - 2³⁰ = 140119931760577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140121005582401) 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, 1297915580 + ... + 1298023533.

It is an arithmetic number, because the mean of its divisors is an integer number (10934095548168).

Almost surely, 2^{140121005502401} is an apocalyptic number.

140121005502401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140121005502401 is a deficient number, since it is larger than the sum of its proper divisors (34824523268287).

140121005502401 is a wasteful number, since it uses less digits than its factorization.

140121005502401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595939832.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 140121005502401 its reverse (104205500121041), we get a palindrome (244326505623442).

The spelling of 140121005502401 in words is "one hundred forty trillion, one hundred twenty-one billion, five million, five hundred two thousand, four hundred one".