12021012005501 has 8 divisors (see below), whose sum is σ = 12365100370560. Its totient is φ = 11680603730208.

The previous prime is 12021012005459. The next prime is 12021012005503. The reversal of 12021012005501 is 10550021012021.

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 12021012005501 - 2¹⁸ = 12021011743357 is a prime.

It is a super-2 number, since 2×12021012005501² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021012005503) 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, 920015816 + ... + 920028881.

It is an arithmetic number, because the mean of its divisors is an integer number (1545637546320).

Almost surely, 2^{12021012005501} is an apocalyptic number.

It is an amenable number.

12021012005501 is a deficient number, since it is larger than the sum of its proper divisors (344088365059).

12021012005501 is a wasteful number, since it uses less digits than its factorization.

12021012005501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840044883.

The product of its (nonzero) digits is 200, while the sum is 20.

Adding to 12021012005501 its reverse (10550021012021), we get a palindrome (22571033017522).

The spelling of 12021012005501 in words is "twelve trillion, twenty-one billion, twelve million, five thousand, five hundred one".