33399121 has 8 divisors (see below), whose sum is σ = 39401984. Its totient is φ = 27704160.

The previous prime is 33399109. The next prime is 33399127. The reversal of 33399121 is 12199333.

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 33399121 - 2⁷ = 33398993 is a prime.

It is a super-2 number, since 2×33399121² = 2231002567145282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33399127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76740 + ... + 77173.

It is an arithmetic number, because the mean of its divisors is an integer number (4925248).

Almost surely, 2^33399121 is an apocalyptic number.

33399121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33399121 is a deficient number, since it is larger than the sum of its proper divisors (6002863).

33399121 is a wasteful number, since it uses less digits than its factorization.

33399121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153951.

The product of its digits is 4374, while the sum is 31.

The square root of 33399121 is about 5779.1972625963. The cubic root of 33399121 is about 322.0413800453.

The spelling of 33399121 in words is "thirty-three million, three hundred ninety-nine thousand, one hundred twenty-one".