21201945093338 has 16 divisors (see below), whose sum is σ = 32457046101120. Its totient is φ = 10384208570400.

The previous prime is 21201945093337. The next prime is 21201945093341. The reversal of 21201945093338 is 83339054910212.

It is not an unprimeable number, because it can be changed into a prime (21201945093337) 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, 319677698 + ... + 319744013.

It is an arithmetic number, because the mean of its divisors is an integer number (2028565381320).

Almost surely, 2^{21201945093338} is an apocalyptic number.

21201945093338 is a deficient number, since it is larger than the sum of its proper divisors (11255101007782).

21201945093338 is a wasteful number, since it uses less digits than its factorization.

21201945093338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639422053.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 21201945093338 in words is "twenty-one trillion, two hundred one billion, nine hundred forty-five million, ninety-three thousand, three hundred thirty-eight".