1246066336221 has 48 divisors (see below), whose sum is σ = 2018258509824. Its totient is φ = 680554629216.

The previous prime is 1246066336187. The next prime is 1246066336241. The reversal of 1246066336221 is 1226336606421.

It is a happy number.

It is not a de Polignac number, because 1246066336221 - 2⁷ = 1246066336093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1246066336241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4264020 + ... + 4546866.

It is an arithmetic number, because the mean of its divisors is an integer number (42047052288).

Almost surely, 2^{1246066336221} is an apocalyptic number.

It is an amenable number.

1246066336221 is a deficient number, since it is larger than the sum of its proper divisors (772192173603).

1246066336221 is a wasteful number, since it uses less digits than its factorization.

1246066336221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284190 (or 284183 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 1246066336221 in words is "one trillion, two hundred forty-six billion, sixty-six million, three hundred thirty-six thousand, two hundred twenty-one".