400020012121301 has 16 divisors (see below), whose sum is σ = 471614194080960. Its totient is φ = 334494976619520.

The previous prime is 400020012121237. The next prime is 400020012121309. The reversal of 400020012121301 is 103121210020004.

It is a cyclic number.

It is not a de Polignac number, because 400020012121301 - 2⁶ = 400020012121237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400020012121301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400020012121309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4942261196 + ... + 4942342133.

It is an arithmetic number, because the mean of its divisors is an integer number (29475887130060).

Almost surely, 2^{400020012121301} is an apocalyptic number.

It is an amenable number.

400020012121301 is a deficient number, since it is larger than the sum of its proper divisors (71594181959659).

400020012121301 is a wasteful number, since it uses less digits than its factorization.

400020012121301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9884603636.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 400020012121301 its reverse (103121210020004), we get a palindrome (503141222141305).

The spelling of 400020012121301 in words is "four hundred trillion, twenty billion, twelve million, one hundred twenty-one thousand, three hundred one".