1033400121 has 32 divisors (see below), whose sum is σ = 1561219968. Its totient is φ = 603624960.

The previous prime is 1033400119. The next prime is 1033400149. The reversal of 1033400121 is 1210043301.

It is not a de Polignac number, because 1033400121 - 2¹ = 1033400119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1033400121.

It is not an unprimeable number, because it can be changed into a prime (1033400111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50430 + ... + 67896.

It is an arithmetic number, because the mean of its divisors is an integer number (48788124).

Almost surely, 2^1033400121 is an apocalyptic number.

It is an amenable number.

1033400121 is a deficient number, since it is larger than the sum of its proper divisors (527819847).

1033400121 is a wasteful number, since it uses less digits than its factorization.

1033400121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17561.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1033400121 is about 32146.5413536200. The cubic root of 1033400121 is about 1011.0116716732.

Adding to 1033400121 its reverse (1210043301), we get a palindrome (2243443422).

The spelling of 1033400121 in words is "one billion, thirty-three million, four hundred thousand, one hundred twenty-one".