34012221520 has 40 divisors (see below), whose sum is σ = 82516611456. Its totient is φ = 13013371008.

The previous prime is 34012221517. The next prime is 34012221527. The reversal of 34012221520 is 2512221043.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×34012221520² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 34012221491 and 34012221500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34012221527) 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, 9240612 + ... + 9244291.

Almost surely, 2^34012221520 is an apocalyptic number.

It is an amenable number.

34012221520 is an abundant number, since it is smaller than the sum of its proper divisors (48504389936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

34012221520 is a wasteful number, since it uses less digits than its factorization.

34012221520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18484939 (or 18484933 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 34012221520 its reverse (2512221043), we get a palindrome (36524442563).

The spelling of 34012221520 in words is "thirty-four billion, twelve million, two hundred twenty-one thousand, five hundred twenty".