21201945093336 has 64 divisors (see below), whose sum is σ = 60577412878080. Its totient is φ = 6057655908480.

The previous prime is 21201945093317. The next prime is 21201945093337. The reversal of 21201945093336 is 63339054910212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201945093337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29415370 + ... + 30127526.

It is an arithmetic number, because the mean of its divisors is an integer number (946522076220).

Almost surely, 2^{21201945093336} is an apocalyptic number.

It is an amenable number.

21201945093336 is an abundant number, since it is smaller than the sum of its proper divisors (39375467784744).

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

21201945093336 is a wasteful number, since it uses less digits than its factorization.

21201945093336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889384 (or 889380 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 48.

The spelling of 21201945093336 in words is "twenty-one trillion, two hundred one billion, nine hundred forty-five million, ninety-three thousand, three hundred thirty-six".