21213611433336 has 64 divisors (see below), whose sum is σ = 61011711290880. Its totient is φ = 6020892547200.

The previous prime is 21213611433307. The next prime is 21213611433389. The reversal of 21213611433336 is 63333411631212.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21213611433294 and 21213611433303.

It is a congruent number.

It is an unprimeable number.

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, 418092171 + ... + 418142906.

It is an arithmetic number, because the mean of its divisors is an integer number (953307988920).

Almost surely, 2^{21213611433336} is an apocalyptic number.

It is an amenable number.

21213611433336 is an abundant number, since it is smaller than the sum of its proper divisors (39798099857544).

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

21213611433336 is a wasteful number, since it uses less digits than its factorization.

21213611433336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836235244 (or 836235240 counting only the distinct ones).

The product of its digits is 139968, while the sum is 39.

The spelling of 21213611433336 in words is "twenty-one trillion, two hundred thirteen billion, six hundred eleven million, four hundred thirty-three thousand, three hundred thirty-six".