33340400121 has 12 divisors (see below), whose sum is σ = 51711641232. Its totient is φ = 19051657128.

The previous prime is 33340400111. The next prime is 33340400123. The reversal of 33340400121 is 12100404333.

It is not a de Polignac number, because 33340400121 - 2⁵ = 33340400089 is a prime.

It is a super-2 number, since 2×33340400121² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (33340400123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113402575 + ... + 113402868.

It is an arithmetic number, because the mean of its divisors is an integer number (4309303436).

Almost surely, 2^33340400121 is an apocalyptic number.

It is an amenable number.

33340400121 is a deficient number, since it is larger than the sum of its proper divisors (18371241111).

33340400121 is a wasteful number, since it uses less digits than its factorization.

33340400121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226805460 (or 226805453 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 33340400121 its reverse (12100404333), we get a palindrome (45440804454).

The spelling of 33340400121 in words is "thirty-three billion, three hundred forty million, four hundred thousand, one hundred twenty-one".