213021329970 has 32 divisors (see below), whose sum is σ = 512405289792. Its totient is φ = 56677454912.

The previous prime is 213021329951. The next prime is 213021329971. The reversal of 213021329970 is 79923120312.

It is not an unprimeable number, because it can be changed into a prime (213021329971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8001057 + ... + 8027636.

It is an arithmetic number, because the mean of its divisors is an integer number (16012665306).

Almost surely, 2^213021329970 is an apocalyptic number.

213021329970 is an abundant number, since it is smaller than the sum of its proper divisors (299383959822).

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

213021329970 is a wasteful number, since it uses less digits than its factorization.

213021329970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16029146.

The product of its (nonzero) digits is 40824, while the sum is 39.

The spelling of 213021329970 in words is "two hundred thirteen billion, twenty-one million, three hundred twenty-nine thousand, nine hundred seventy".