213021329997 has 16 divisors (see below), whose sum is σ = 324659446272. Its totient is φ = 121705656240.

The previous prime is 213021329971. The next prime is 213021329999. The reversal of 213021329997 is 799923120312.

It is not a de Polignac number, because 213021329997 - 2⁶ = 213021329933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213021329999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 741279 + ... + 987692.

It is an arithmetic number, because the mean of its divisors is an integer number (20291215392).

Almost surely, 2^213021329997 is an apocalyptic number.

It is an amenable number.

213021329997 is a deficient number, since it is larger than the sum of its proper divisors (111638116275).

213021329997 is a wasteful number, since it uses less digits than its factorization.

213021329997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734848.

The product of its (nonzero) digits is 367416, while the sum is 48.

The spelling of 213021329997 in words is "two hundred thirteen billion, twenty-one million, three hundred twenty-nine thousand, nine hundred ninety-seven".