213522400201451 has 4 divisors (see below), whose sum is σ = 232933527492504. Its totient is φ = 194111272910400.

The previous prime is 213522400201367. The next prime is 213522400201471. The reversal of 213522400201451 is 154102004225312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213522400201451 - 2¹⁸ = 213522399939307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213522400201471) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9705563645510 + ... + 9705563645531.

It is an arithmetic number, because the mean of its divisors is an integer number (58233381873126).

Almost surely, 2^{213522400201451} is an apocalyptic number.

213522400201451 is a deficient number, since it is larger than the sum of its proper divisors (19411127291053).

213522400201451 is a wasteful number, since it uses less digits than its factorization.

213522400201451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19411127291052.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 213522400201451 its reverse (154102004225312), we get a palindrome (367624404426763).

The spelling of 213522400201451 in words is "two hundred thirteen trillion, five hundred twenty-two billion, four hundred million, two hundred one thousand, four hundred fifty-one".