33420203121 has 32 divisors (see below), whose sum is σ = 48223641600. Its totient is φ = 20515550400.

The previous prime is 33420203119. The next prime is 33420203137. The reversal of 33420203121 is 12130202433.

It is not a de Polignac number, because 33420203121 - 2¹ = 33420203119 is a prime.

It is a super-2 number, since 2×33420203121² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33420201121) 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, 2141296 + ... + 2156846.

It is an arithmetic number, because the mean of its divisors is an integer number (1506988800).

Almost surely, 2^33420203121 is an apocalyptic number.

It is an amenable number.

33420203121 is a deficient number, since it is larger than the sum of its proper divisors (14803438479).

33420203121 is a wasteful number, since it uses less digits than its factorization.

33420203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16629.

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

Adding to 33420203121 its reverse (12130202433), we get a palindrome (45550405554).

The spelling of 33420203121 in words is "thirty-three billion, four hundred twenty million, two hundred three thousand, one hundred twenty-one".