21210212111193 has 72 divisors (see below), whose sum is σ = 35730371192256. Its totient is φ = 12089034216000.

The previous prime is 21210212111113. The next prime is 21210212111227. The reversal of 21210212111193 is 39111121201212.

It is not a de Polignac number, because 21210212111193 - 2⁸ = 21210212110937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210212111113) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1661845230 + ... + 1661857992.

It is an arithmetic number, because the mean of its divisors is an integer number (496255155448).

Almost surely, 2^{21210212111193} is an apocalyptic number.

It is an amenable number.

21210212111193 is a deficient number, since it is larger than the sum of its proper divisors (14520159081063).

21210212111193 is a wasteful number, since it uses less digits than its factorization.

21210212111193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22155 (or 22145 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The spelling of 21210212111193 in words is "twenty-one trillion, two hundred ten billion, two hundred twelve million, one hundred eleven thousand, one hundred ninety-three".