33421021631 has 8 divisors (see below), whose sum is σ = 35128668384. Its totient is φ = 31734588160.

The previous prime is 33421021597. The next prime is 33421021643. The reversal of 33421021631 is 13612012433.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33421021631 is a prime.

It is a super-2 number, since 2×33421021631² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33421021631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33421021031) 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, 5300090 + ... + 5306391.

It is an arithmetic number, because the mean of its divisors is an integer number (4391083548).

Almost surely, 2^33421021631 is an apocalyptic number.

33421021631 is a deficient number, since it is larger than the sum of its proper divisors (1707646753).

33421021631 is a wasteful number, since it uses less digits than its factorization.

33421021631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10606641.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 33421021631 in words is "thirty-three billion, four hundred twenty-one million, twenty-one thousand, six hundred thirty-one".