1010400121 has 8 divisors (see below), whose sum is σ = 1013961600. Its totient is φ = 1006845840.

The previous prime is 1010400119. The next prime is 1010400163. The reversal of 1010400121 is 1210040101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1010400121 - 2¹ = 1010400119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010400098 and 1010400107.

It is not an unprimeable number, because it can be changed into a prime (1010400191) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 462610 + ... + 464788.

It is an arithmetic number, because the mean of its divisors is an integer number (126745200).

Almost surely, 2^1010400121 is an apocalyptic number.

It is an amenable number.

1010400121 is a deficient number, since it is larger than the sum of its proper divisors (3561479).

1010400121 is an equidigital number, since it uses as much as digits as its factorization.

1010400121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1010400121 is about 31786.7916122405. The cubic root of 1010400121 is about 1003.4547579032.

Adding to 1010400121 its reverse (1210040101), we get a palindrome (2220440222).

The spelling of 1010400121 in words is "one billion, ten million, four hundred thousand, one hundred twenty-one".